/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_nondet.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:21:12,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:21:12,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:21:12,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:21:12,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:21:12,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:21:12,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:21:12,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:21:12,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:21:12,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:21:12,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:21:12,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2021-05-02 18:21:12,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:21:12,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:21:12,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:21:12,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:21:12,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:21:12,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:21:12,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:21:12,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:21:12,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:21:12,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:21:12,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:21:12,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:21:12,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:21:12,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:21:12,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:21:12,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:21:12,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:21:12,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:21:12,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:21:12,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:21:12,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:21:12,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:21:12,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:12,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:21:12,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:21:12,667 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:21:12,670 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:21:13,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:21:13,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:21:13,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:21:13,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:21:13,048 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:21:13,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_nondet.i [2021-05-02 18:21:13,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e458fe25a/df100f0478e647ab9db5a11353b32918/FLAG06093bda8 [2021-05-02 18:21:13,575 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:21:13,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_nondet.i [2021-05-02 18:21:13,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e458fe25a/df100f0478e647ab9db5a11353b32918/FLAG06093bda8 [2021-05-02 18:21:13,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e458fe25a/df100f0478e647ab9db5a11353b32918 [2021-05-02 18:21:13,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:21:13,610 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:21:13,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:13,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:21:13,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:21:13,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e9fa60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13, skipping insertion in model container [2021-05-02 18:21:13,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:21:13,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:21:13,768 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_nondet.i[891,904] [2021-05-02 18:21:13,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:13,789 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:21:13,828 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_nondet.i[891,904] [2021-05-02 18:21:13,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:21:13,849 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:21:13,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13 WrapperNode [2021-05-02 18:21:13,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:21:13,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:21:13,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:21:13,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:21:13,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,881 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... [2021-05-02 18:21:13,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:21:13,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:21:13,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:21:13,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:21:13,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:21:13,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:21:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:21:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:21:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:21:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:21:13,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:21:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:21:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:21:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:21:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:21:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:21:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:21:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:21:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:21:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:21:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:21:14,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:21:14,230 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:21:14,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:14 BoogieIcfgContainer [2021-05-02 18:21:14,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:21:14,232 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:21:14,232 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:21:14,233 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:21:14,235 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:14" (1/1) ... [2021-05-02 18:21:14,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:14 BasicIcfg [2021-05-02 18:21:14,280 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:21:14,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:21:14,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:21:14,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:21:14,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:21:13" (1/4) ... [2021-05-02 18:21:14,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3a59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:14, skipping insertion in model container [2021-05-02 18:21:14,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:21:13" (2/4) ... [2021-05-02 18:21:14,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3a59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:21:14, skipping insertion in model container [2021-05-02 18:21:14,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:21:14" (3/4) ... [2021-05-02 18:21:14,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f3a59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:21:14, skipping insertion in model container [2021-05-02 18:21:14,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:21:14" (4/4) ... [2021-05-02 18:21:14,286 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_nondet.iJordan [2021-05-02 18:21:14,291 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:21:14,294 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:21:14,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:21:14,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:21:14,342 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:21:14,342 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:21:14,342 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:21:14,342 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:21:14,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:21:14,343 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:21:14,343 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:21:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:21:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:21:14,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,359 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:14,359 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:14,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:14,364 INFO L82 PathProgramCache]: Analyzing trace with hash 180216049, now seen corresponding path program 1 times [2021-05-02 18:21:14,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:14,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636895360] [2021-05-02 18:21:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636895360] [2021-05-02 18:21:14,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636895360] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:21:14,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:21:14,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:21:14,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708042783] [2021-05-02 18:21:14,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:21:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:14,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:21:14,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:21:14,656 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:14,745 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-05-02 18:21:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:21:14,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 18:21:14,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:14,753 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:21:14,753 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:21:14,754 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:21:14,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:21:14,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-05-02 18:21:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-05-02 18:21:14,777 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-05-02 18:21:14,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:14,777 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-05-02 18:21:14,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:14,777 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-05-02 18:21:14,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:21:14,778 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:14,778 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:14,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:21:14,779 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1966995474, now seen corresponding path program 1 times [2021-05-02 18:21:14,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:14,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933548223] [2021-05-02 18:21:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:14,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:14,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933548223] [2021-05-02 18:21:14,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933548223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:14,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474304018] [2021-05-02 18:21:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:14,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:21:14,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:15,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474304018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:21:15,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572203057] [2021-05-02 18:21:15,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:21:15,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:21:15,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:21:15,055 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:15,133 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-05-02 18:21:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:21:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:21:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:15,134 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:21:15,135 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:21:15,135 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:21:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:21:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:21:15,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-02 18:21:15,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-02 18:21:15,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:15,138 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-02 18:21:15,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-02 18:21:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:21:15,139 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:15,139 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:15,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 18:21:15,349 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:15,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:15,350 INFO L82 PathProgramCache]: Analyzing trace with hash 442000299, now seen corresponding path program 2 times [2021-05-02 18:21:15,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:15,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018842387] [2021-05-02 18:21:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:15,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018842387] [2021-05-02 18:21:15,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018842387] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378385970] [2021-05-02 18:21:15,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:15,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:15,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:21:15,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:15,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:15,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378385970] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:15,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:15,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-05-02 18:21:15,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120813916] [2021-05-02 18:21:15,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:21:15,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:15,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:21:15,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:21:15,689 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:15,849 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-05-02 18:21:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 18:21:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 18:21:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:15,851 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:21:15,851 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:21:15,852 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:21:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:21:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 18:21:15,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 18:21:15,857 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-02 18:21:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:15,857 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 18:21:15,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 18:21:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:21:15,858 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:15,859 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:16,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,065 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:16,065 INFO L82 PathProgramCache]: Analyzing trace with hash 499565608, now seen corresponding path program 3 times [2021-05-02 18:21:16,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:16,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006427854] [2021-05-02 18:21:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:16,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006427854] [2021-05-02 18:21:16,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006427854] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754687108] [2021-05-02 18:21:16,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:21:16,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:16,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:21:16,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:16,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754687108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:16,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-05-02 18:21:16,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105826788] [2021-05-02 18:21:16,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 18:21:16,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:16,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 18:21:16,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:21:16,333 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:16,505 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-05-02 18:21:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:21:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 18:21:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:16,508 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:21:16,508 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:21:16,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:21:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:21:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-02 18:21:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-05-02 18:21:16,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2021-05-02 18:21:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:16,515 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-05-02 18:21:16,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-05-02 18:21:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:21:16,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:16,520 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:16,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,741 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash -14747291, now seen corresponding path program 4 times [2021-05-02 18:21:16,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:16,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25975402] [2021-05-02 18:21:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:16,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25975402] [2021-05-02 18:21:16,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25975402] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476774640] [2021-05-02 18:21:16,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:16,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:16,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:21:16,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:16,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:16,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476774640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:16,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:16,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-05-02 18:21:16,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18096582] [2021-05-02 18:21:16,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 18:21:16,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:16,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 18:21:16,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-02 18:21:16,998 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:17,189 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-05-02 18:21:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:21:17,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 18:21:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:17,190 INFO L225 Difference]: With dead ends: 26 [2021-05-02 18:21:17,190 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 18:21:17,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 224.3ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:21:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 18:21:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-05-02 18:21:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-05-02 18:21:17,193 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2021-05-02 18:21:17,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:17,194 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-05-02 18:21:17,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-05-02 18:21:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:21:17,194 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:17,194 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:17,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,401 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:17,401 INFO L82 PathProgramCache]: Analyzing trace with hash -348204190, now seen corresponding path program 5 times [2021-05-02 18:21:17,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:17,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631090653] [2021-05-02 18:21:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:17,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:17,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:17,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631090653] [2021-05-02 18:21:17,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631090653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159517983] [2021-05-02 18:21:17,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:17,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 18:21:17,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:17,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:21:17,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:17,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159517983] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:17,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:17,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2021-05-02 18:21:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705089775] [2021-05-02 18:21:17,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:21:17,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:21:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:21:17,687 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:17,926 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-05-02 18:21:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:21:17,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 18:21:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:17,927 INFO L225 Difference]: With dead ends: 28 [2021-05-02 18:21:17,927 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 18:21:17,928 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 246.4ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:21:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 18:21:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-05-02 18:21:17,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-05-02 18:21:17,930 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2021-05-02 18:21:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:17,930 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-05-02 18:21:17,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-05-02 18:21:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 18:21:17,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:17,931 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:18,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 18:21:18,133 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1322263071, now seen corresponding path program 6 times [2021-05-02 18:21:18,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:18,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165802240] [2021-05-02 18:21:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:18,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165802240] [2021-05-02 18:21:18,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165802240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877326937] [2021-05-02 18:21:18,261 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:18,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 18:21:18,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:18,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:21:18,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877326937] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:18,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2021-05-02 18:21:18,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991546293] [2021-05-02 18:21:18,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:21:18,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:18,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:21:18,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:21:18,395 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:18,660 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-05-02 18:21:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 18:21:18,662 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 18:21:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:18,662 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:21:18,662 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 18:21:18,663 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 276.2ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:21:18,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 18:21:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-02 18:21:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-05-02 18:21:18,665 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2021-05-02 18:21:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:18,665 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-05-02 18:21:18,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-05-02 18:21:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 18:21:18,666 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:18,666 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:18,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:18,873 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 323532188, now seen corresponding path program 7 times [2021-05-02 18:21:18,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:18,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504482753] [2021-05-02 18:21:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:18,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:18,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504482753] [2021-05-02 18:21:18,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504482753] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:18,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405662588] [2021-05-02 18:21:18,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:21:19,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:19,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405662588] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:19,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 16 [2021-05-02 18:21:19,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709645859] [2021-05-02 18:21:19,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:21:19,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:21:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:21:19,145 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:19,407 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-05-02 18:21:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:21:19,408 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-02 18:21:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:19,409 INFO L225 Difference]: With dead ends: 32 [2021-05-02 18:21:19,409 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 18:21:19,409 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 284.2ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:21:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 18:21:19,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-02 18:21:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-05-02 18:21:19,412 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2021-05-02 18:21:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:19,412 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-05-02 18:21:19,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-05-02 18:21:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:21:19,413 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:19,413 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:19,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:19,625 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:19,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1679139367, now seen corresponding path program 8 times [2021-05-02 18:21:19,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:19,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644292870] [2021-05-02 18:21:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:19,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:19,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644292870] [2021-05-02 18:21:19,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644292870] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778151167] [2021-05-02 18:21:19,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:19,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:19,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:19,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:21:19,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:19,916 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:19,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778151167] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:19,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:19,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2021-05-02 18:21:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429909711] [2021-05-02 18:21:19,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 18:21:19,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 18:21:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:21:19,918 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:20,224 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-05-02 18:21:20,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:21:20,224 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 18:21:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:20,225 INFO L225 Difference]: With dead ends: 34 [2021-05-02 18:21:20,225 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 18:21:20,225 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 327.5ms TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 18:21:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-05-02 18:21:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-05-02 18:21:20,227 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2021-05-02 18:21:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:20,227 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-05-02 18:21:20,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-05-02 18:21:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:21:20,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:20,228 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:20,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 18:21:20,429 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:20,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2101155114, now seen corresponding path program 9 times [2021-05-02 18:21:20,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:20,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967170897] [2021-05-02 18:21:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:20,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:20,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967170897] [2021-05-02 18:21:20,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967170897] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:20,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233251592] [2021-05-02 18:21:20,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:20,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:21:20,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:20,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:21:20,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:20,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:20,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233251592] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:20,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:20,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 18 [2021-05-02 18:21:20,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485880075] [2021-05-02 18:21:20,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:21:20,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:20,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:21:20,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:21:20,747 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:21,078 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-05-02 18:21:21,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:21:21,078 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 18:21:21,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:21,079 INFO L225 Difference]: With dead ends: 36 [2021-05-02 18:21:21,079 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 18:21:21,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 364.8ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 18:21:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-02 18:21:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-05-02 18:21:21,082 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2021-05-02 18:21:21,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:21,083 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-05-02 18:21:21,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,083 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-05-02 18:21:21,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 18:21:21,083 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:21,084 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:21,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:21,309 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash 363605139, now seen corresponding path program 10 times [2021-05-02 18:21:21,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:21,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750573009] [2021-05-02 18:21:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:21,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:21,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:21,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750573009] [2021-05-02 18:21:21,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750573009] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:21,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642705175] [2021-05-02 18:21:21,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:21,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:21,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:21,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:21:21,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:21,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:21,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642705175] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:21,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:21,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 19 [2021-05-02 18:21:21,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604809159] [2021-05-02 18:21:21,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:21:21,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:21,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:21:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:21:21,630 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:21,974 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-05-02 18:21:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 18:21:21,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 18:21:21,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:21,976 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:21:21,976 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 18:21:21,976 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 398.1ms TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:21:21,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 18:21:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-02 18:21:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-05-02 18:21:21,979 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2021-05-02 18:21:21,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:21,979 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-05-02 18:21:21,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-05-02 18:21:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 18:21:21,980 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:21,980 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:22,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:22,191 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:22,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1823739120, now seen corresponding path program 11 times [2021-05-02 18:21:22,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:22,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087637403] [2021-05-02 18:21:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:22,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:22,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087637403] [2021-05-02 18:21:22,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087637403] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824362942] [2021-05-02 18:21:22,380 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:22,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 18:21:22,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:21:22,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:22,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824362942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:22,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:22,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 20 [2021-05-02 18:21:22,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763307425] [2021-05-02 18:21:22,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 18:21:22,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:22,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 18:21:22,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-05-02 18:21:22,553 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:22,964 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-05-02 18:21:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:21:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 18:21:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:22,967 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:21:22,967 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 18:21:22,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 474.8ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:21:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 18:21:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-02 18:21:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-05-02 18:21:22,972 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2021-05-02 18:21:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:22,972 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-05-02 18:21:22,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-05-02 18:21:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 18:21:22,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:22,974 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:23,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 18:21:23,189 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:23,189 INFO L82 PathProgramCache]: Analyzing trace with hash 672403021, now seen corresponding path program 12 times [2021-05-02 18:21:23,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:23,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907974455] [2021-05-02 18:21:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:23,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:23,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:23,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907974455] [2021-05-02 18:21:23,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907974455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:23,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116298981] [2021-05-02 18:21:23,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:23,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 18:21:23,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:23,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:21:23,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:23,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:23,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116298981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:23,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:23,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 21 [2021-05-02 18:21:23,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356732386] [2021-05-02 18:21:23,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:21:23,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:23,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:21:23,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:21:23,541 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:23,949 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-05-02 18:21:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:21:23,949 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 18:21:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:23,950 INFO L225 Difference]: With dead ends: 42 [2021-05-02 18:21:23,950 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 18:21:23,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 473.4ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:21:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 18:21:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-02 18:21:23,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-05-02 18:21:23,953 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2021-05-02 18:21:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:23,953 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-05-02 18:21:23,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-05-02 18:21:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:21:23,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:23,954 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:24,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 18:21:24,169 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:24,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1421717942, now seen corresponding path program 13 times [2021-05-02 18:21:24,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:24,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137385561] [2021-05-02 18:21:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:24,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:24,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137385561] [2021-05-02 18:21:24,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137385561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679505580] [2021-05-02 18:21:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:24,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:21:24,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:24,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679505580] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:24,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:24,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 22 [2021-05-02 18:21:24,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581904722] [2021-05-02 18:21:24,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:21:24,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:24,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:21:24,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:21:24,532 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:24,982 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-05-02 18:21:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:21:24,982 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 18:21:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:24,983 INFO L225 Difference]: With dead ends: 44 [2021-05-02 18:21:24,983 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 18:21:24,983 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 514.3ms TimeCoverageRelationStatistics Valid=400, Invalid=1006, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:21:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 18:21:24,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-02 18:21:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-05-02 18:21:24,986 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2021-05-02 18:21:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:24,986 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-05-02 18:21:24,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-05-02 18:21:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:21:24,987 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:24,987 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:25,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 18:21:25,205 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash 467698439, now seen corresponding path program 14 times [2021-05-02 18:21:25,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:25,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158909111] [2021-05-02 18:21:25,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:25,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:25,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158909111] [2021-05-02 18:21:25,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158909111] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:25,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681111393] [2021-05-02 18:21:25,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:25,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:25,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:21:25,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:25,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681111393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:25,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:25,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 23 [2021-05-02 18:21:25,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366199958] [2021-05-02 18:21:25,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:21:25,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:25,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:21:25,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:21:25,575 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:26,039 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-05-02 18:21:26,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:21:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 18:21:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:26,040 INFO L225 Difference]: With dead ends: 46 [2021-05-02 18:21:26,040 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 18:21:26,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 525.2ms TimeCoverageRelationStatistics Valid=449, Invalid=1111, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:21:26,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 18:21:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-02 18:21:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-05-02 18:21:26,043 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2021-05-02 18:21:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:26,043 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-05-02 18:21:26,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-05-02 18:21:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 18:21:26,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:26,044 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:26,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:26,267 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:26,267 INFO L82 PathProgramCache]: Analyzing trace with hash -574325628, now seen corresponding path program 15 times [2021-05-02 18:21:26,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:26,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860323183] [2021-05-02 18:21:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:26,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:26,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860323183] [2021-05-02 18:21:26,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860323183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:26,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994726701] [2021-05-02 18:21:26,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:26,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 18:21:26,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:26,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:21:26,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:26,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:26,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994726701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:26,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:26,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 24 [2021-05-02 18:21:26,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425976900] [2021-05-02 18:21:26,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:21:26,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:26,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:21:26,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:21:26,678 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:27,164 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-05-02 18:21:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:21:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 18:21:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:27,165 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:21:27,165 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 18:21:27,166 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 583.7ms TimeCoverageRelationStatistics Valid=501, Invalid=1221, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:21:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 18:21:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-02 18:21:27,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-05-02 18:21:27,173 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2021-05-02 18:21:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:27,174 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-05-02 18:21:27,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.7916666666666667) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-05-02 18:21:27,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 18:21:27,175 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:27,175 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:27,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:21:27,395 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:27,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1232074047, now seen corresponding path program 16 times [2021-05-02 18:21:27,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:27,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896512390] [2021-05-02 18:21:27,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:27,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:27,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896512390] [2021-05-02 18:21:27,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896512390] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593029121] [2021-05-02 18:21:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:27,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:27,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:27,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:21:27,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:27,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:27,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593029121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:27,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:27,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 25 [2021-05-02 18:21:27,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850275595] [2021-05-02 18:21:27,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:21:27,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:27,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:21:27,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:21:27,820 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:28,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:28,323 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-05-02 18:21:28,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 18:21:28,323 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 18:21:28,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:28,323 INFO L225 Difference]: With dead ends: 50 [2021-05-02 18:21:28,324 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 18:21:28,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 606.2ms TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:21:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 18:21:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-02 18:21:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-05-02 18:21:28,327 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43 [2021-05-02 18:21:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:28,327 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-05-02 18:21:28,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:28,327 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-05-02 18:21:28,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:21:28,327 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:28,327 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:28,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 18:21:28,537 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:28,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1968112194, now seen corresponding path program 17 times [2021-05-02 18:21:28,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:28,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107957876] [2021-05-02 18:21:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:28,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:28,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:28,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107957876] [2021-05-02 18:21:28,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107957876] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:28,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277729221] [2021-05-02 18:21:28,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:28,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:21:28,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:21:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:28,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:29,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277729221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:29,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:29,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 26 [2021-05-02 18:21:29,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051457643] [2021-05-02 18:21:29,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 18:21:29,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:29,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 18:21:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:21:29,003 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:29,586 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-05-02 18:21:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:21:29,586 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 18:21:29,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:29,587 INFO L225 Difference]: With dead ends: 52 [2021-05-02 18:21:29,587 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 18:21:29,587 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 697.9ms TimeCoverageRelationStatistics Valid=614, Invalid=1456, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:21:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 18:21:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-02 18:21:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-05-02 18:21:29,592 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45 [2021-05-02 18:21:29,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:29,592 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-05-02 18:21:29,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-05-02 18:21:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:21:29,593 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:29,593 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:29,815 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:21:29,816 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:29,816 INFO L82 PathProgramCache]: Analyzing trace with hash -631167621, now seen corresponding path program 18 times [2021-05-02 18:21:29,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:29,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141400786] [2021-05-02 18:21:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:30,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:30,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141400786] [2021-05-02 18:21:30,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141400786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:30,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376255845] [2021-05-02 18:21:30,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:30,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 18:21:30,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:30,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:21:30,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:30,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376255845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:30,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:30,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 27 [2021-05-02 18:21:30,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294335743] [2021-05-02 18:21:30,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:21:30,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:30,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:21:30,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:21:30,302 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:30,896 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-05-02 18:21:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:21:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 18:21:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:30,897 INFO L225 Difference]: With dead ends: 54 [2021-05-02 18:21:30,897 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 18:21:30,898 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 707.9ms TimeCoverageRelationStatistics Valid=675, Invalid=1581, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:21:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 18:21:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-02 18:21:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-05-02 18:21:30,901 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47 [2021-05-02 18:21:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:30,901 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-05-02 18:21:30,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-05-02 18:21:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 18:21:30,902 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:30,902 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:31,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:31,113 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -22654472, now seen corresponding path program 19 times [2021-05-02 18:21:31,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:31,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890552403] [2021-05-02 18:21:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:31,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:31,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890552403] [2021-05-02 18:21:31,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890552403] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:31,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039220647] [2021-05-02 18:21:31,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:31,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:21:31,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:31,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039220647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:31,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:31,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 28 [2021-05-02 18:21:31,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564310869] [2021-05-02 18:21:31,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:21:31,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:31,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:21:31,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=491, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:21:31,577 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:32,192 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-05-02 18:21:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 18:21:32,192 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 18:21:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:32,193 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:21:32,193 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 18:21:32,193 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 736.9ms TimeCoverageRelationStatistics Valid=739, Invalid=1711, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:21:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 18:21:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-02 18:21:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-05-02 18:21:32,196 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2021-05-02 18:21:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:32,196 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-05-02 18:21:32,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-05-02 18:21:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 18:21:32,196 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:32,197 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:32,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:32,409 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:32,409 INFO L82 PathProgramCache]: Analyzing trace with hash 642929461, now seen corresponding path program 20 times [2021-05-02 18:21:32,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:32,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608828513] [2021-05-02 18:21:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:32,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:32,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:32,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608828513] [2021-05-02 18:21:32,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608828513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:32,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88977729] [2021-05-02 18:21:32,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:32,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:32,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:32,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:21:32,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:32,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:32,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88977729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:32,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:32,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 30 [2021-05-02 18:21:32,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093518434] [2021-05-02 18:21:32,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:21:32,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:32,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:21:32,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=580, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:32,969 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:33,957 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-05-02 18:21:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 18:21:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 51 [2021-05-02 18:21:33,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:33,958 INFO L225 Difference]: With dead ends: 58 [2021-05-02 18:21:33,958 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 18:21:33,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1122.4ms TimeCoverageRelationStatistics Valid=858, Invalid=2004, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:21:33,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 18:21:33,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-02 18:21:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-05-02 18:21:33,961 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51 [2021-05-02 18:21:33,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:33,962 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-05-02 18:21:33,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 27 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:21:33,962 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-05-02 18:21:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:21:33,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:33,962 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:34,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:21:34,181 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:34,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:34,181 INFO L82 PathProgramCache]: Analyzing trace with hash 318961970, now seen corresponding path program 21 times [2021-05-02 18:21:34,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:34,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744470519] [2021-05-02 18:21:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:34,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:34,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:34,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744470519] [2021-05-02 18:21:34,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744470519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:34,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638586551] [2021-05-02 18:21:34,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:34,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:21:34,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:34,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:21:34,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:34,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:34,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638586551] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:34,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:34,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 30 [2021-05-02 18:21:34,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157123902] [2021-05-02 18:21:34,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:21:34,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:34,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:21:34,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:21:34,763 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:35,437 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-05-02 18:21:35,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:21:35,439 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 18:21:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:35,440 INFO L225 Difference]: With dead ends: 60 [2021-05-02 18:21:35,440 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 18:21:35,441 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 890.8ms TimeCoverageRelationStatistics Valid=876, Invalid=1986, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:21:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 18:21:35,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-05-02 18:21:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-05-02 18:21:35,443 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53 [2021-05-02 18:21:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:35,443 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-05-02 18:21:35,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-05-02 18:21:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:21:35,443 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:35,444 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:35,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 18:21:35,653 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1776151569, now seen corresponding path program 22 times [2021-05-02 18:21:35,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:35,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150226153] [2021-05-02 18:21:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:35,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:35,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150226153] [2021-05-02 18:21:35,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150226153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:35,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876131824] [2021-05-02 18:21:35,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:36,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:36,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:36,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:21:36,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:36,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876131824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:36,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:36,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 31 [2021-05-02 18:21:36,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152296333] [2021-05-02 18:21:36,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:21:36,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:21:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=593, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:21:36,229 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:36,998 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-05-02 18:21:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 18:21:36,999 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 18:21:36,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:37,000 INFO L225 Difference]: With dead ends: 62 [2021-05-02 18:21:37,000 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 18:21:37,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 954.4ms TimeCoverageRelationStatistics Valid=949, Invalid=2131, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:21:37,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 18:21:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-02 18:21:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-05-02 18:21:37,003 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55 [2021-05-02 18:21:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:37,003 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-05-02 18:21:37,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 1.8387096774193548) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-05-02 18:21:37,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 18:21:37,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:37,004 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:37,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:37,219 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:37,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:37,219 INFO L82 PathProgramCache]: Analyzing trace with hash -840600724, now seen corresponding path program 23 times [2021-05-02 18:21:37,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:37,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086925595] [2021-05-02 18:21:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:37,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:37,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086925595] [2021-05-02 18:21:37,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086925595] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:37,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862853205] [2021-05-02 18:21:37,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:37,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 18:21:37,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:37,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:21:37,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:37,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:37,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862853205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:37,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:37,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 32 [2021-05-02 18:21:37,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104005260] [2021-05-02 18:21:37,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 18:21:37,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:37,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 18:21:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:21:37,863 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 32 states, 32 states have (on average 1.84375) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:38,732 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-05-02 18:21:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:21:38,732 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 18:21:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:38,733 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:21:38,733 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 18:21:38,733 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1103.0ms TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:21:38,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 18:21:38,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-02 18:21:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-05-02 18:21:38,735 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57 [2021-05-02 18:21:38,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:38,735 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-05-02 18:21:38,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.84375) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-05-02 18:21:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 18:21:38,735 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:38,735 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:38,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:21:38,936 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:38,936 INFO L82 PathProgramCache]: Analyzing trace with hash 575596457, now seen corresponding path program 24 times [2021-05-02 18:21:38,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:38,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414414950] [2021-05-02 18:21:38,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:39,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:39,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414414950] [2021-05-02 18:21:39,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414414950] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:39,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552734300] [2021-05-02 18:21:39,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:39,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 18:21:39,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:39,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:21:39,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:39,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:39,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552734300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:39,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:39,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 33 [2021-05-02 18:21:39,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365106472] [2021-05-02 18:21:39,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:21:39,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:39,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:21:39,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=666, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:21:39,572 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:40,347 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-05-02 18:21:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:21:40,350 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 18:21:40,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:40,350 INFO L225 Difference]: With dead ends: 66 [2021-05-02 18:21:40,350 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 18:21:40,351 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1026.5ms TimeCoverageRelationStatistics Valid=1104, Invalid=2436, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:21:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 18:21:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-02 18:21:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-05-02 18:21:40,353 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59 [2021-05-02 18:21:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:40,353 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-05-02 18:21:40,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-05-02 18:21:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:21:40,354 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:40,354 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:40,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:40,554 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:40,555 INFO L82 PathProgramCache]: Analyzing trace with hash 36454566, now seen corresponding path program 25 times [2021-05-02 18:21:40,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:40,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476294873] [2021-05-02 18:21:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:40,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:40,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476294873] [2021-05-02 18:21:40,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476294873] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:40,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067926837] [2021-05-02 18:21:40,954 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:41,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:41,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:21:41,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:41,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:41,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067926837] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:41,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:41,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 34 [2021-05-02 18:21:41,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648476127] [2021-05-02 18:21:41,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:21:41,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:41,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:21:41,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=704, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:21:41,227 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:42,077 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-05-02 18:21:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:21:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 18:21:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:42,078 INFO L225 Difference]: With dead ends: 68 [2021-05-02 18:21:42,078 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 18:21:42,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 1094.3ms TimeCoverageRelationStatistics Valid=1186, Invalid=2596, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:21:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 18:21:42,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-05-02 18:21:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-05-02 18:21:42,081 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61 [2021-05-02 18:21:42,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:42,081 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-05-02 18:21:42,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-05-02 18:21:42,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:21:42,082 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:42,082 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:42,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 18:21:42,289 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:42,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1612140131, now seen corresponding path program 26 times [2021-05-02 18:21:42,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:42,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712187933] [2021-05-02 18:21:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:42,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:42,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:42,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712187933] [2021-05-02 18:21:42,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712187933] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:42,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873337885] [2021-05-02 18:21:42,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:42,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:42,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:21:42,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:42,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873337885] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:42,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:42,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 35 [2021-05-02 18:21:42,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382943897] [2021-05-02 18:21:42,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:21:42,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:42,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:21:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=743, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:21:42,960 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:43,858 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-05-02 18:21:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:21:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 18:21:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:43,859 INFO L225 Difference]: With dead ends: 70 [2021-05-02 18:21:43,859 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 18:21:43,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1173.4ms TimeCoverageRelationStatistics Valid=1271, Invalid=2761, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:21:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 18:21:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-05-02 18:21:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-05-02 18:21:43,861 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63 [2021-05-02 18:21:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:43,862 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-05-02 18:21:43,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.8571428571428572) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-05-02 18:21:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 18:21:43,862 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:43,862 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:44,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 18:21:44,063 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:44,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash -277487392, now seen corresponding path program 27 times [2021-05-02 18:21:44,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:44,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276380235] [2021-05-02 18:21:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:44,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:44,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276380235] [2021-05-02 18:21:44,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276380235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:44,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972005257] [2021-05-02 18:21:44,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:44,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 18:21:44,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:44,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:21:44,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:44,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:44,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972005257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:44,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:44,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 36 [2021-05-02 18:21:44,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951285815] [2021-05-02 18:21:44,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:21:44,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:44,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:21:44,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:21:44,812 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:45,798 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-05-02 18:21:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:21:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 18:21:45,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:45,799 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:21:45,799 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 18:21:45,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1291.9ms TimeCoverageRelationStatistics Valid=1359, Invalid=2931, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:21:45,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 18:21:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 18:21:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-05-02 18:21:45,802 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65 [2021-05-02 18:21:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:45,802 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-05-02 18:21:45,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:45,803 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-05-02 18:21:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 18:21:45,803 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:45,803 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:46,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:21:46,017 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash 561629213, now seen corresponding path program 28 times [2021-05-02 18:21:46,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:46,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681371447] [2021-05-02 18:21:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:46,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:46,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681371447] [2021-05-02 18:21:46,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681371447] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:46,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701453174] [2021-05-02 18:21:46,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:46,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:46,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:46,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:21:46,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:46,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701453174] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:46,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:46,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 37 [2021-05-02 18:21:46,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876583694] [2021-05-02 18:21:46,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:21:46,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:46,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:21:46,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=824, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:21:46,777 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:47,766 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-05-02 18:21:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 18:21:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 18:21:47,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:47,767 INFO L225 Difference]: With dead ends: 74 [2021-05-02 18:21:47,767 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 18:21:47,767 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1334.9ms TimeCoverageRelationStatistics Valid=1450, Invalid=3106, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:21:47,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 18:21:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-02 18:21:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-05-02 18:21:47,769 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67 [2021-05-02 18:21:47,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:47,769 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-05-02 18:21:47,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.864864864864865) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:47,769 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-05-02 18:21:47,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:21:47,770 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:47,770 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:47,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:21:47,985 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:47,985 INFO L82 PathProgramCache]: Analyzing trace with hash -501165030, now seen corresponding path program 29 times [2021-05-02 18:21:47,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:47,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995971614] [2021-05-02 18:21:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:48,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:48,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995971614] [2021-05-02 18:21:48,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995971614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:48,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410199619] [2021-05-02 18:21:48,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:48,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 18:21:48,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:48,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:21:48,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:48,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 841 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:48,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410199619] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:48,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:48,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 38 [2021-05-02 18:21:48,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821829087] [2021-05-02 18:21:48,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 18:21:48,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:48,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 18:21:48,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=866, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:21:48,795 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:49,866 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-05-02 18:21:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:21:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 18:21:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:49,867 INFO L225 Difference]: With dead ends: 76 [2021-05-02 18:21:49,867 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 18:21:49,867 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1433.4ms TimeCoverageRelationStatistics Valid=1544, Invalid=3286, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:21:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 18:21:49,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-05-02 18:21:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-05-02 18:21:49,869 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69 [2021-05-02 18:21:49,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:49,869 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-05-02 18:21:49,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.868421052631579) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:49,869 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-05-02 18:21:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:21:49,870 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:49,870 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:50,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:50,077 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:50,077 INFO L82 PathProgramCache]: Analyzing trace with hash 355783895, now seen corresponding path program 30 times [2021-05-02 18:21:50,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:50,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974589216] [2021-05-02 18:21:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:50,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:50,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:50,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974589216] [2021-05-02 18:21:50,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974589216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:50,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297237680] [2021-05-02 18:21:50,624 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:50,738 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:21:50,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:50,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:21:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:50,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:50,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297237680] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:50,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:50,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 39 [2021-05-02 18:21:50,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648533628] [2021-05-02 18:21:50,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:21:50,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:21:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=909, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:21:50,925 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:51,979 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2021-05-02 18:21:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:21:51,979 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 18:21:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:51,980 INFO L225 Difference]: With dead ends: 78 [2021-05-02 18:21:51,980 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 18:21:51,981 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1455.5ms TimeCoverageRelationStatistics Valid=1641, Invalid=3471, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:21:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 18:21:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-05-02 18:21:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-05-02 18:21:51,983 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71 [2021-05-02 18:21:51,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:51,983 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-05-02 18:21:51,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.8717948717948718) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:51,983 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-05-02 18:21:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 18:21:51,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:51,984 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:52,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:52,197 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:52,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:52,197 INFO L82 PathProgramCache]: Analyzing trace with hash -750020012, now seen corresponding path program 31 times [2021-05-02 18:21:52,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:52,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707778605] [2021-05-02 18:21:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:52,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:52,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:52,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707778605] [2021-05-02 18:21:52,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707778605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:52,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668080251] [2021-05-02 18:21:52,771 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:52,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:21:52,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:52,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:52,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:53,066 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:53,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668080251] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:53,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:53,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 40 [2021-05-02 18:21:53,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066646792] [2021-05-02 18:21:53,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:21:53,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:53,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:21:53,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=953, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:21:53,068 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 40 states, 40 states have (on average 1.875) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:54,253 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-05-02 18:21:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 18:21:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 18:21:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:54,254 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:21:54,254 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 18:21:54,254 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1555.1ms TimeCoverageRelationStatistics Valid=1741, Invalid=3661, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:21:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 18:21:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-02 18:21:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-05-02 18:21:54,256 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73 [2021-05-02 18:21:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:54,256 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-05-02 18:21:54,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.875) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-05-02 18:21:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 18:21:54,257 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:54,257 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:54,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:54,472 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:54,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1724314769, now seen corresponding path program 32 times [2021-05-02 18:21:54,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:54,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377287930] [2021-05-02 18:21:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:55,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:55,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377287930] [2021-05-02 18:21:55,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377287930] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972941964] [2021-05-02 18:21:55,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:55,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:21:55,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:55,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:21:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:55,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:55,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972941964] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:55,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:55,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 41 [2021-05-02 18:21:55,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989061381] [2021-05-02 18:21:55,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 18:21:55,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:55,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 18:21:55,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=998, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 18:21:55,318 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 41 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:56,526 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-05-02 18:21:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:21:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 18:21:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:56,527 INFO L225 Difference]: With dead ends: 82 [2021-05-02 18:21:56,527 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 18:21:56,527 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1621.2ms TimeCoverageRelationStatistics Valid=1844, Invalid=3856, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:21:56,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 18:21:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-02 18:21:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-05-02 18:21:56,529 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75 [2021-05-02 18:21:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:56,529 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-05-02 18:21:56,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.8780487804878048) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:56,529 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-05-02 18:21:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:21:56,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:56,530 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:56,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 18:21:56,731 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:56,731 INFO L82 PathProgramCache]: Analyzing trace with hash 148157326, now seen corresponding path program 33 times [2021-05-02 18:21:56,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:56,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968636535] [2021-05-02 18:21:56,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:57,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:57,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:57,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968636535] [2021-05-02 18:21:57,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968636535] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:57,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466240588] [2021-05-02 18:21:57,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:57,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:21:57,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:57,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:21:57,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:57,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466240588] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:57,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:21:57,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 42 [2021-05-02 18:21:57,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377326606] [2021-05-02 18:21:57,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:21:57,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:21:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:21:57,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=1044, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:21:57,624 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:21:58,916 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-05-02 18:21:58,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:21:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 18:21:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:21:58,917 INFO L225 Difference]: With dead ends: 84 [2021-05-02 18:21:58,917 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 18:21:58,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1636.9ms TimeCoverageRelationStatistics Valid=1950, Invalid=4056, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:21:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 18:21:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-05-02 18:21:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:58,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-05-02 18:21:58,920 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77 [2021-05-02 18:21:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:21:58,920 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-05-02 18:21:58,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.880952380952381) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:21:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-05-02 18:21:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:21:58,920 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:21:58,920 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:21:59,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:59,121 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:21:59,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:21:59,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1584310091, now seen corresponding path program 34 times [2021-05-02 18:21:59,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:21:59,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377582509] [2021-05-02 18:21:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:21:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:59,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:21:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:21:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:21:59,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:21:59,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377582509] [2021-05-02 18:21:59,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377582509] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:21:59,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836688166] [2021-05-02 18:21:59,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:21:59,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:21:59,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:21:59,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 18:21:59,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:21:59,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:21:59,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:00,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836688166] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:00,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:00,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 43 [2021-05-02 18:22:00,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014994664] [2021-05-02 18:22:00,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:22:00,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:00,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:22:00,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=1091, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:22:00,014 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 43 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:01,332 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-05-02 18:22:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 18:22:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 18:22:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:01,333 INFO L225 Difference]: With dead ends: 86 [2021-05-02 18:22:01,333 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 18:22:01,334 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1696.5ms TimeCoverageRelationStatistics Valid=2059, Invalid=4261, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:22:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 18:22:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-05-02 18:22:01,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-05-02 18:22:01,337 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79 [2021-05-02 18:22:01,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:01,337 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-05-02 18:22:01,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.8837209302325582) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:01,337 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-05-02 18:22:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 18:22:01,338 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:01,338 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:01,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:22:01,553 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:01,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1252352056, now seen corresponding path program 35 times [2021-05-02 18:22:01,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:01,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095173820] [2021-05-02 18:22:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:02,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:02,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095173820] [2021-05-02 18:22:02,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095173820] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:02,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383841372] [2021-05-02 18:22:02,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:02,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 18:22:02,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:02,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:22:02,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:02,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:02,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:02,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383841372] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:02,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:02,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 44 [2021-05-02 18:22:02,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756350173] [2021-05-02 18:22:02,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 18:22:02,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:02,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 18:22:02,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=1139, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:22:02,500 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:03,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:03,821 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-05-02 18:22:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:22:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 18:22:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:03,822 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:22:03,822 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 18:22:03,823 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 1765.0ms TimeCoverageRelationStatistics Valid=2171, Invalid=4471, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:22:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 18:22:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-02 18:22:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-05-02 18:22:03,825 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81 [2021-05-02 18:22:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:03,825 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-05-02 18:22:03,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-05-02 18:22:03,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 18:22:03,825 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:03,825 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:04,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:04,045 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:04,045 INFO L82 PathProgramCache]: Analyzing trace with hash 19557637, now seen corresponding path program 36 times [2021-05-02 18:22:04,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:04,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172516765] [2021-05-02 18:22:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:04,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:04,724 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:04,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172516765] [2021-05-02 18:22:04,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172516765] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:04,724 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114271826] [2021-05-02 18:22:04,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:04,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 18:22:04,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:04,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:22:04,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:04,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:04,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:05,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:05,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114271826] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:05,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:05,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 45 [2021-05-02 18:22:05,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008336315] [2021-05-02 18:22:05,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:22:05,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:05,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:22:05,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=1188, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:22:05,066 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:06,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:06,483 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-05-02 18:22:06,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:22:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 18:22:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:06,484 INFO L225 Difference]: With dead ends: 90 [2021-05-02 18:22:06,484 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 18:22:06,484 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1888.9ms TimeCoverageRelationStatistics Valid=2286, Invalid=4686, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:22:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 18:22:06,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-02 18:22:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:06,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-05-02 18:22:06,486 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83 [2021-05-02 18:22:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:06,486 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-05-02 18:22:06,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.8888888888888888) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-05-02 18:22:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:22:06,487 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:06,487 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:06,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:22:06,697 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:06,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:06,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1740906750, now seen corresponding path program 37 times [2021-05-02 18:22:06,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:06,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138548023] [2021-05-02 18:22:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:07,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:07,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138548023] [2021-05-02 18:22:07,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138548023] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:07,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172279079] [2021-05-02 18:22:07,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:07,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 18:22:07,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:07,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 0 proven. 1369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:07,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172279079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:07,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:07,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 46 [2021-05-02 18:22:07,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060759275] [2021-05-02 18:22:07,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:22:07,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:07,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:22:07,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=832, Invalid=1238, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:22:07,735 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 46 states, 46 states have (on average 1.891304347826087) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:09,166 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-05-02 18:22:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:22:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.891304347826087) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 18:22:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:09,167 INFO L225 Difference]: With dead ends: 92 [2021-05-02 18:22:09,167 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 18:22:09,168 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1936.3ms TimeCoverageRelationStatistics Valid=2404, Invalid=4906, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:22:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 18:22:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-05-02 18:22:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-05-02 18:22:09,169 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85 [2021-05-02 18:22:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:09,170 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-05-02 18:22:09,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.891304347826087) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:09,170 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-05-02 18:22:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:22:09,170 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:09,170 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:09,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:22:09,381 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1330068033, now seen corresponding path program 38 times [2021-05-02 18:22:09,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:09,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426821718] [2021-05-02 18:22:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:10,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:10,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426821718] [2021-05-02 18:22:10,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426821718] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854631701] [2021-05-02 18:22:10,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:10,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:10,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:10,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:22:10,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:10,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854631701] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:10,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:10,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 47 [2021-05-02 18:22:10,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815603411] [2021-05-02 18:22:10,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:22:10,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:22:10,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=1289, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:22:10,492 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 47 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:11,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:11,947 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-05-02 18:22:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:22:11,948 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 18:22:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:11,948 INFO L225 Difference]: With dead ends: 94 [2021-05-02 18:22:11,948 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 18:22:11,949 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 2044.0ms TimeCoverageRelationStatistics Valid=2525, Invalid=5131, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:22:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 18:22:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-05-02 18:22:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-05-02 18:22:11,951 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87 [2021-05-02 18:22:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:11,951 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-05-02 18:22:11,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 1.8936170212765957) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:11,951 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-05-02 18:22:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 18:22:11,952 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:11,952 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:12,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:22:12,157 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:12,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:12,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1651052228, now seen corresponding path program 39 times [2021-05-02 18:22:12,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:12,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767402735] [2021-05-02 18:22:12,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:12,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:12,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767402735] [2021-05-02 18:22:12,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767402735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:12,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672073934] [2021-05-02 18:22:12,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:13,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 18:22:13,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:13,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:22:13,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:13,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:13,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672073934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:13,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:13,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 48 [2021-05-02 18:22:13,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674698077] [2021-05-02 18:22:13,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:22:13,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:13,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:22:13,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=915, Invalid=1341, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:22:13,310 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:14,926 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-05-02 18:22:14,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:22:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 18:22:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:14,927 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:22:14,927 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 18:22:14,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 2177.7ms TimeCoverageRelationStatistics Valid=2649, Invalid=5361, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:22:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 18:22:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-02 18:22:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-05-02 18:22:14,929 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89 [2021-05-02 18:22:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:14,929 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-05-02 18:22:14,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-05-02 18:22:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 18:22:14,930 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:14,930 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:15,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:22:15,142 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:15,142 INFO L82 PathProgramCache]: Analyzing trace with hash -879218311, now seen corresponding path program 40 times [2021-05-02 18:22:15,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:15,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13652772] [2021-05-02 18:22:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:15,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:15,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:15,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13652772] [2021-05-02 18:22:15,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13652772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:15,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787298903] [2021-05-02 18:22:15,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:16,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:16,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:16,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 18:22:16,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:16,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787298903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:16,238 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:16,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 49 [2021-05-02 18:22:16,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976560311] [2021-05-02 18:22:16,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:22:16,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:22:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=1394, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:22:16,239 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 49 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:17,842 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-05-02 18:22:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 18:22:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 18:22:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:17,843 INFO L225 Difference]: With dead ends: 98 [2021-05-02 18:22:17,843 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 18:22:17,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 2179.9ms TimeCoverageRelationStatistics Valid=2776, Invalid=5596, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:22:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 18:22:17,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-02 18:22:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-05-02 18:22:17,846 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91 [2021-05-02 18:22:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:17,846 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-05-02 18:22:17,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-05-02 18:22:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:22:17,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:17,847 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:18,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:18,061 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:18,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:18,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2118801014, now seen corresponding path program 41 times [2021-05-02 18:22:18,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:18,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287230000] [2021-05-02 18:22:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:18,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:18,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:18,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287230000] [2021-05-02 18:22:18,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287230000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:18,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640592378] [2021-05-02 18:22:18,902 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:18,994 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:22:18,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:18,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:22:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:19,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:19,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640592378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:19,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:19,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 50 [2021-05-02 18:22:19,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523170040] [2021-05-02 18:22:19,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 18:22:19,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:19,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 18:22:19,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=1448, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:22:19,245 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 50 states, 50 states have (on average 1.9) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:20,835 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-05-02 18:22:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:22:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.9) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 18:22:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:20,835 INFO L225 Difference]: With dead ends: 100 [2021-05-02 18:22:20,835 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 18:22:20,836 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 2250.3ms TimeCoverageRelationStatistics Valid=2906, Invalid=5836, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:22:20,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 18:22:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-02 18:22:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-05-02 18:22:20,838 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2021-05-02 18:22:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:20,838 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-05-02 18:22:20,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.9) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-05-02 18:22:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:22:20,839 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:20,839 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:21,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 18:22:21,049 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:21,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1292316723, now seen corresponding path program 42 times [2021-05-02 18:22:21,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:21,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425632713] [2021-05-02 18:22:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:21,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:21,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425632713] [2021-05-02 18:22:21,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425632713] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:21,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40537399] [2021-05-02 18:22:21,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:22,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 18:22:22,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:22:22,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:22,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:22,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40537399] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:22,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:22,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 51 [2021-05-02 18:22:22,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765384536] [2021-05-02 18:22:22,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:22:22,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:22,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:22:22,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1047, Invalid=1503, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:22:22,273 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 51 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:24,008 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-05-02 18:22:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:22:24,008 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 18:22:24,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:24,009 INFO L225 Difference]: With dead ends: 102 [2021-05-02 18:22:24,009 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 18:22:24,009 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 2360.5ms TimeCoverageRelationStatistics Valid=3039, Invalid=6081, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:22:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 18:22:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-05-02 18:22:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-05-02 18:22:24,012 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95 [2021-05-02 18:22:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:24,013 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-05-02 18:22:24,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.9019607843137254) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-05-02 18:22:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 18:22:24,014 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:24,014 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:24,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:24,214 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:24,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1609862832, now seen corresponding path program 43 times [2021-05-02 18:22:24,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:24,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506759451] [2021-05-02 18:22:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:25,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:25,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506759451] [2021-05-02 18:22:25,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506759451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:25,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81019262] [2021-05-02 18:22:25,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:25,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:22:25,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:25,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:25,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1849 backedges. 0 proven. 1849 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:25,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81019262] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:25,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:25,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 52 [2021-05-02 18:22:25,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493804587] [2021-05-02 18:22:25,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:22:25,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:25,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:22:25,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=1559, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:22:25,611 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:27,377 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-05-02 18:22:27,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 18:22:27,377 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 18:22:27,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:27,378 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:22:27,378 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 18:22:27,378 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 2518.2ms TimeCoverageRelationStatistics Valid=3175, Invalid=6331, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:22:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 18:22:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-05-02 18:22:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-05-02 18:22:27,380 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97 [2021-05-02 18:22:27,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:27,380 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-05-02 18:22:27,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:27,381 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-05-02 18:22:27,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 18:22:27,381 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:27,381 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:27,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:27,585 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:27,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1828995565, now seen corresponding path program 44 times [2021-05-02 18:22:27,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:27,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278911457] [2021-05-02 18:22:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:28,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:28,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278911457] [2021-05-02 18:22:28,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278911457] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:28,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838239288] [2021-05-02 18:22:28,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:28,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:28,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:28,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 18:22:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:28,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:28,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838239288] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:28,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:28,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 54 [2021-05-02 18:22:28,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073211731] [2021-05-02 18:22:28,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:22:28,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:22:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1142, Invalid=1720, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:22:28,999 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 54 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 51 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:31,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:31,245 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2021-05-02 18:22:31,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 18:22:31,246 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 51 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2021-05-02 18:22:31,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:31,246 INFO L225 Difference]: With dead ends: 106 [2021-05-02 18:22:31,246 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 18:22:31,247 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 2992.1ms TimeCoverageRelationStatistics Valid=3414, Invalid=6888, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:22:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 18:22:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-05-02 18:22:31,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-05-02 18:22:31,254 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99 [2021-05-02 18:22:31,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:31,255 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-05-02 18:22:31,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 51 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:22:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-05-02 18:22:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:22:31,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:31,255 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:31,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-02 18:22:31,473 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1962154474, now seen corresponding path program 45 times [2021-05-02 18:22:31,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:31,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122294929] [2021-05-02 18:22:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:32,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:32,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122294929] [2021-05-02 18:22:32,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122294929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:32,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610509252] [2021-05-02 18:22:32,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:32,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:22:32,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:32,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:22:32,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:32,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610509252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:32,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:32,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 54 [2021-05-02 18:22:32,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996201000] [2021-05-02 18:22:32,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:22:32,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:32,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:22:32,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1188, Invalid=1674, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:22:32,818 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 54 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:34,734 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-05-02 18:22:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:22:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 18:22:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:34,735 INFO L225 Difference]: With dead ends: 108 [2021-05-02 18:22:34,735 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 18:22:34,735 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 2616.1ms TimeCoverageRelationStatistics Valid=3456, Invalid=6846, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:22:34,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 18:22:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-05-02 18:22:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-05-02 18:22:34,738 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101 [2021-05-02 18:22:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:34,738 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-05-02 18:22:34,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.9074074074074074) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-05-02 18:22:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:22:34,739 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:34,739 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:34,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 18:22:34,956 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:34,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:34,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1078847143, now seen corresponding path program 46 times [2021-05-02 18:22:34,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:34,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970649942] [2021-05-02 18:22:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:36,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:36,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970649942] [2021-05-02 18:22:36,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970649942] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:36,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129333140] [2021-05-02 18:22:36,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:36,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:36,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:36,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 18:22:36,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:36,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:36,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129333140] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:36,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:36,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 55 [2021-05-02 18:22:36,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888563602] [2021-05-02 18:22:36,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:22:36,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:36,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:22:36,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1237, Invalid=1733, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:22:36,481 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 55 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:38,422 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-05-02 18:22:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 18:22:38,423 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-02 18:22:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:38,423 INFO L225 Difference]: With dead ends: 110 [2021-05-02 18:22:38,423 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 18:22:38,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 2878.0ms TimeCoverageRelationStatistics Valid=3601, Invalid=7111, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:22:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 18:22:38,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2021-05-02 18:22:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-05-02 18:22:38,426 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103 [2021-05-02 18:22:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:38,426 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-05-02 18:22:38,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 1.9090909090909092) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-05-02 18:22:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 18:22:38,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:38,427 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:38,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:22:38,649 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:38,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:38,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1670940636, now seen corresponding path program 47 times [2021-05-02 18:22:38,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:38,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932166011] [2021-05-02 18:22:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:39,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:39,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932166011] [2021-05-02 18:22:39,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932166011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:39,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068159710] [2021-05-02 18:22:39,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:39,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 18:22:39,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:39,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:22:39,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:39,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:39,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 0 proven. 2209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:40,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068159710] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:40,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:40,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 56 [2021-05-02 18:22:40,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564229048] [2021-05-02 18:22:40,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 18:22:40,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:40,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 18:22:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:22:40,147 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 56 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:42,230 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2021-05-02 18:22:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:22:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 18:22:42,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:42,231 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:22:42,231 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 18:22:42,232 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 2930.5ms TimeCoverageRelationStatistics Valid=3749, Invalid=7381, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:22:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 18:22:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-05-02 18:22:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2021-05-02 18:22:42,234 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105 [2021-05-02 18:22:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:42,234 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2021-05-02 18:22:42,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2021-05-02 18:22:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 18:22:42,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:42,235 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:42,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:42,459 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1482858081, now seen corresponding path program 48 times [2021-05-02 18:22:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:42,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8885077] [2021-05-02 18:22:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:43,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:43,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:43,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8885077] [2021-05-02 18:22:43,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8885077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:43,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948395660] [2021-05-02 18:22:43,553 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:43,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 18:22:43,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:22:43,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:43,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:43,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948395660] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:43,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:43,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 57 [2021-05-02 18:22:43,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731167363] [2021-05-02 18:22:43,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:22:43,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:43,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:22:43,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1338, Invalid=1854, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:22:43,951 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 57 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:46,085 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-05-02 18:22:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:22:46,086 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 18:22:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:46,086 INFO L225 Difference]: With dead ends: 114 [2021-05-02 18:22:46,086 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 18:22:46,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2942.0ms TimeCoverageRelationStatistics Valid=3900, Invalid=7656, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:22:46,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 18:22:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-05-02 18:22:46,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-05-02 18:22:46,089 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107 [2021-05-02 18:22:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:46,089 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-05-02 18:22:46,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:46,090 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-05-02 18:22:46,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:22:46,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:46,090 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:46,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:22:46,293 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:46,293 INFO L82 PathProgramCache]: Analyzing trace with hash 36514142, now seen corresponding path program 49 times [2021-05-02 18:22:46,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:46,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771312403] [2021-05-02 18:22:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:47,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:47,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:47,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771312403] [2021-05-02 18:22:47,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771312403] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:47,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737361358] [2021-05-02 18:22:47,450 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:47,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 18:22:47,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:47,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 0 proven. 2401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:47,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737361358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:47,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:47,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 58 [2021-05-02 18:22:47,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633750132] [2021-05-02 18:22:47,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:22:47,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:47,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:22:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1390, Invalid=1916, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:22:47,807 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:49,963 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-05-02 18:22:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:22:49,963 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 18:22:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:49,964 INFO L225 Difference]: With dead ends: 116 [2021-05-02 18:22:49,964 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 18:22:49,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 3034.8ms TimeCoverageRelationStatistics Valid=4054, Invalid=7936, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:22:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 18:22:49,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-05-02 18:22:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-05-02 18:22:49,967 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109 [2021-05-02 18:22:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:49,967 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-05-02 18:22:49,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.9137931034482758) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-05-02 18:22:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:22:49,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:49,968 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:50,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 18:22:50,191 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1669392667, now seen corresponding path program 50 times [2021-05-02 18:22:50,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:50,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463999139] [2021-05-02 18:22:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:51,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:51,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:51,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:51,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463999139] [2021-05-02 18:22:51,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463999139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:51,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061341336] [2021-05-02 18:22:51,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:51,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:22:51,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:51,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:22:51,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:51,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:51,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061341336] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:51,762 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:51,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 59 [2021-05-02 18:22:51,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826322673] [2021-05-02 18:22:51,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:22:51,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:51,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:22:51,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=1979, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:22:51,764 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 59 states, 59 states have (on average 1.9152542372881356) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:54,092 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2021-05-02 18:22:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:22:54,092 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.9152542372881356) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-02 18:22:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:54,093 INFO L225 Difference]: With dead ends: 118 [2021-05-02 18:22:54,093 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 18:22:54,094 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 3202.9ms TimeCoverageRelationStatistics Valid=4211, Invalid=8221, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:22:54,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 18:22:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-05-02 18:22:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-05-02 18:22:54,096 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111 [2021-05-02 18:22:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:54,096 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-05-02 18:22:54,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 1.9152542372881356) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-05-02 18:22:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 18:22:54,097 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:54,097 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:54,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:54,309 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1092375144, now seen corresponding path program 51 times [2021-05-02 18:22:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:54,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120842262] [2021-05-02 18:22:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:55,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:55,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:55,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120842262] [2021-05-02 18:22:55,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120842262] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:55,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164238348] [2021-05-02 18:22:55,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:55,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-05-02 18:22:55,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:22:55,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:55,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2601 backedges. 0 proven. 2601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:55,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164238348] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:55,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:22:55,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 60 [2021-05-02 18:22:55,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036317392] [2021-05-02 18:22:55,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:22:55,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:22:55,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:22:55,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1497, Invalid=2043, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:22:55,994 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 60 states, 60 states have (on average 1.9166666666666667) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:22:58,337 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-05-02 18:22:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:22:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9166666666666667) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-02 18:22:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:22:58,342 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:22:58,342 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 18:22:58,342 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 3264.2ms TimeCoverageRelationStatistics Valid=4371, Invalid=8511, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:22:58,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 18:22:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-05-02 18:22:58,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.009009009009009) internal successors, (112), 111 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2021-05-02 18:22:58,344 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113 [2021-05-02 18:22:58,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:22:58,345 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2021-05-02 18:22:58,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9166666666666667) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:22:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2021-05-02 18:22:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 18:22:58,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:22:58,346 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:22:58,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-05-02 18:22:58,549 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:22:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:22:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash -861452587, now seen corresponding path program 52 times [2021-05-02 18:22:58,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:22:58,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997621616] [2021-05-02 18:22:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:22:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:22:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:22:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:22:59,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:22:59,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997621616] [2021-05-02 18:22:59,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997621616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:22:59,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492129275] [2021-05-02 18:22:59,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:22:59,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:22:59,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:22:59,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 18:22:59,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:22:59,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:22:59,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:00,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492129275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:00,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:00,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 61 [2021-05-02 18:23:00,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444585459] [2021-05-02 18:23:00,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:23:00,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:00,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:23:00,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1552, Invalid=2108, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:23:00,183 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand has 61 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:02,591 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2021-05-02 18:23:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 18:23:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-02 18:23:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:02,593 INFO L225 Difference]: With dead ends: 122 [2021-05-02 18:23:02,593 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 18:23:02,593 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3370.5ms TimeCoverageRelationStatistics Valid=4534, Invalid=8806, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:23:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 18:23:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-05-02 18:23:02,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.008849557522124) internal successors, (114), 113 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2021-05-02 18:23:02,595 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115 [2021-05-02 18:23:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:02,596 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2021-05-02 18:23:02,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 1.9180327868852458) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2021-05-02 18:23:02,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:23:02,596 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:02,597 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:02,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:02,805 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:02,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2011792594, now seen corresponding path program 53 times [2021-05-02 18:23:02,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:02,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139941891] [2021-05-02 18:23:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:04,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:04,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:04,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139941891] [2021-05-02 18:23:04,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139941891] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:04,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225876085] [2021-05-02 18:23:04,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:04,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-05-02 18:23:04,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:04,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:23:04,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:04,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 0 proven. 2809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:04,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225876085] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:04,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:04,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 62 [2021-05-02 18:23:04,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348694180] [2021-05-02 18:23:04,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 18:23:04,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:04,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 18:23:04,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1608, Invalid=2174, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:23:04,538 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 62 states, 62 states have (on average 1.9193548387096775) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:06,978 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2021-05-02 18:23:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:23:06,978 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.9193548387096775) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 18:23:06,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:06,979 INFO L225 Difference]: With dead ends: 124 [2021-05-02 18:23:06,979 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 18:23:06,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 3473.9ms TimeCoverageRelationStatistics Valid=4700, Invalid=9106, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:23:06,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 18:23:06,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2021-05-02 18:23:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.008695652173913) internal successors, (116), 115 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2021-05-02 18:23:06,982 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117 [2021-05-02 18:23:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:06,982 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2021-05-02 18:23:06,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.9193548387096775) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2021-05-02 18:23:06,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:23:06,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:06,983 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:07,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 18:23:07,209 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1536440207, now seen corresponding path program 54 times [2021-05-02 18:23:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:07,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976139282] [2021-05-02 18:23:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:08,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:08,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976139282] [2021-05-02 18:23:08,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976139282] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:08,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924549323] [2021-05-02 18:23:08,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:08,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:23:08,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:08,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:23:08,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:08,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:08,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:09,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924549323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:09,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:09,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 63 [2021-05-02 18:23:09,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676380308] [2021-05-02 18:23:09,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:23:09,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:09,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:23:09,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1665, Invalid=2241, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:23:09,005 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 63 states, 63 states have (on average 1.9206349206349207) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:11,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:11,613 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2021-05-02 18:23:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:23:11,614 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.9206349206349207) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-02 18:23:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:11,614 INFO L225 Difference]: With dead ends: 126 [2021-05-02 18:23:11,615 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 18:23:11,615 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 3662.7ms TimeCoverageRelationStatistics Valid=4869, Invalid=9411, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 18:23:11,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 18:23:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-05-02 18:23:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-05-02 18:23:11,617 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119 [2021-05-02 18:23:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:11,617 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-05-02 18:23:11,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.9206349206349207) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:11,617 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-05-02 18:23:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 18:23:11,617 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:11,618 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:11,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 18:23:11,818 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:11,818 INFO L82 PathProgramCache]: Analyzing trace with hash -10670324, now seen corresponding path program 55 times [2021-05-02 18:23:11,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:11,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298387423] [2021-05-02 18:23:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:13,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:13,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:13,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298387423] [2021-05-02 18:23:13,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298387423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:13,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619579059] [2021-05-02 18:23:13,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 18:23:13,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:13,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3025 backedges. 0 proven. 3025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:13,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619579059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:13,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:13,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 64 [2021-05-02 18:23:13,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218425355] [2021-05-02 18:23:13,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:23:13,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:13,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:23:13,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=2309, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:23:13,632 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 64 states, 64 states have (on average 1.921875) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:16,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:16,224 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2021-05-02 18:23:16,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 18:23:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.921875) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 18:23:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:16,225 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:23:16,225 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 18:23:16,226 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 3721.0ms TimeCoverageRelationStatistics Valid=5041, Invalid=9721, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:23:16,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 18:23:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-05-02 18:23:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.0084033613445378) internal successors, (120), 119 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-05-02 18:23:16,227 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121 [2021-05-02 18:23:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:16,227 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-05-02 18:23:16,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.921875) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-05-02 18:23:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 18:23:16,228 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:16,228 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:16,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:16,453 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:16,453 INFO L82 PathProgramCache]: Analyzing trace with hash -725206199, now seen corresponding path program 56 times [2021-05-02 18:23:16,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:16,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126908773] [2021-05-02 18:23:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:17,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:17,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126908773] [2021-05-02 18:23:17,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126908773] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:17,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167490093] [2021-05-02 18:23:17,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:17,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:23:17,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:17,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:23:17,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:18,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:18,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167490093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:18,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:18,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 65 [2021-05-02 18:23:18,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220150376] [2021-05-02 18:23:18,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 18:23:18,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:18,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 18:23:18,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1782, Invalid=2378, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 18:23:18,280 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 65 states, 65 states have (on average 1.9230769230769231) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:20,981 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2021-05-02 18:23:20,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:23:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.9230769230769231) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-02 18:23:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:20,983 INFO L225 Difference]: With dead ends: 130 [2021-05-02 18:23:20,983 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 18:23:20,984 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3820.9ms TimeCoverageRelationStatistics Valid=5216, Invalid=10036, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:23:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 18:23:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2021-05-02 18:23:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.0082644628099173) internal successors, (122), 121 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2021-05-02 18:23:20,985 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123 [2021-05-02 18:23:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:20,985 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2021-05-02 18:23:20,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 1.9230769230769231) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2021-05-02 18:23:20,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:23:20,986 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:20,986 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:21,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:23:21,187 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:21,187 INFO L82 PathProgramCache]: Analyzing trace with hash -199414714, now seen corresponding path program 57 times [2021-05-02 18:23:21,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:21,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23490999] [2021-05-02 18:23:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:22,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:22,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23490999] [2021-05-02 18:23:22,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23490999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:22,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420492382] [2021-05-02 18:23:22,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:22,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:23:22,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:22,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:23:22,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:22,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:22,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 0 proven. 3249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:23,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420492382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:23,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:23,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 66 [2021-05-02 18:23:23,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936216317] [2021-05-02 18:23:23,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:23:23,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:23:23,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1842, Invalid=2448, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:23:23,167 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:25,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:25,867 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-05-02 18:23:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:23:25,868 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-02 18:23:25,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:25,868 INFO L225 Difference]: With dead ends: 132 [2021-05-02 18:23:25,868 INFO L226 Difference]: Without dead ends: 129 [2021-05-02 18:23:25,869 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 3982.7ms TimeCoverageRelationStatistics Valid=5394, Invalid=10356, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 18:23:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-02 18:23:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-05-02 18:23:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.008130081300813) internal successors, (124), 123 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2021-05-02 18:23:25,870 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125 [2021-05-02 18:23:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:25,870 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2021-05-02 18:23:25,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.9242424242424243) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2021-05-02 18:23:25,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:23:25,871 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:25,871 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:26,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:26,072 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:26,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1719938557, now seen corresponding path program 58 times [2021-05-02 18:23:26,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:26,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397271784] [2021-05-02 18:23:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:27,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:27,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397271784] [2021-05-02 18:23:27,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397271784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:27,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332888228] [2021-05-02 18:23:27,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:27,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:23:27,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:27,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 18:23:27,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:27,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:27,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:28,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332888228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:28,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:28,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 67 [2021-05-02 18:23:28,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761664377] [2021-05-02 18:23:28,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:23:28,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:28,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:23:28,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1903, Invalid=2519, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:23:28,080 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand has 67 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:30,897 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-05-02 18:23:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 18:23:30,897 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-02 18:23:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:30,898 INFO L225 Difference]: With dead ends: 134 [2021-05-02 18:23:30,898 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 18:23:30,898 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 4041.8ms TimeCoverageRelationStatistics Valid=5575, Invalid=10681, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:23:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 18:23:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2021-05-02 18:23:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.008) internal successors, (126), 125 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2021-05-02 18:23:30,900 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127 [2021-05-02 18:23:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:30,900 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2021-05-02 18:23:30,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:30,900 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2021-05-02 18:23:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 18:23:30,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:30,900 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:31,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 18:23:31,101 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:31,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1640496256, now seen corresponding path program 59 times [2021-05-02 18:23:31,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:31,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428345101] [2021-05-02 18:23:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:32,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:32,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428345101] [2021-05-02 18:23:32,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428345101] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:32,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689779838] [2021-05-02 18:23:32,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:32,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-05-02 18:23:32,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:32,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:23:32,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:32,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3481 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:33,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689779838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:33,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:33,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 68 [2021-05-02 18:23:33,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356666104] [2021-05-02 18:23:33,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 18:23:33,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:33,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 18:23:33,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1965, Invalid=2591, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:23:33,174 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:36,032 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2021-05-02 18:23:36,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:23:36,032 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 18:23:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:36,033 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:23:36,033 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 18:23:36,034 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 4215.3ms TimeCoverageRelationStatistics Valid=5759, Invalid=11011, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:23:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 18:23:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 18:23:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2021-05-02 18:23:36,035 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129 [2021-05-02 18:23:36,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:36,035 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2021-05-02 18:23:36,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9264705882352942) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2021-05-02 18:23:36,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 18:23:36,036 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:36,036 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:36,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 18:23:36,237 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1202944957, now seen corresponding path program 60 times [2021-05-02 18:23:36,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:36,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042088596] [2021-05-02 18:23:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:37,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042088596] [2021-05-02 18:23:37,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042088596] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:37,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137762269] [2021-05-02 18:23:37,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:38,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-05-02 18:23:38,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:38,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:23:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:38,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:38,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:38,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137762269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:38,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:38,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 69 [2021-05-02 18:23:38,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099819163] [2021-05-02 18:23:38,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:23:38,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:38,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:23:38,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=2664, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:23:38,358 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:41,360 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2021-05-02 18:23:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:23:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-02 18:23:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:41,361 INFO L225 Difference]: With dead ends: 138 [2021-05-02 18:23:41,361 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 18:23:41,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 4328.4ms TimeCoverageRelationStatistics Valid=5946, Invalid=11346, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 18:23:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 18:23:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-05-02 18:23:41,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.0077519379844961) internal successors, (130), 129 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:41,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-05-02 18:23:41,363 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131 [2021-05-02 18:23:41,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:41,363 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-05-02 18:23:41,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.9275362318840579) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-05-02 18:23:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:23:41,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:41,364 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:41,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:41,564 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:41,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1622941626, now seen corresponding path program 61 times [2021-05-02 18:23:41,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:41,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507228197] [2021-05-02 18:23:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:43,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:43,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:43,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507228197] [2021-05-02 18:23:43,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507228197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:43,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932108607] [2021-05-02 18:23:43,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:43,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 18:23:43,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:43,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932108607] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:43,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:43,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 70 [2021-05-02 18:23:43,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438644141] [2021-05-02 18:23:43,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:23:43,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:23:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2092, Invalid=2738, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:23:43,710 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 70 states, 70 states have (on average 1.9285714285714286) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:46,812 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2021-05-02 18:23:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:23:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9285714285714286) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 18:23:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:46,814 INFO L225 Difference]: With dead ends: 140 [2021-05-02 18:23:46,814 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 18:23:46,815 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 4479.9ms TimeCoverageRelationStatistics Valid=6136, Invalid=11686, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:23:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 18:23:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-05-02 18:23:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.0076335877862594) internal successors, (132), 131 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2021-05-02 18:23:46,817 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133 [2021-05-02 18:23:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:46,817 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2021-05-02 18:23:46,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.9285714285714286) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:46,817 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2021-05-02 18:23:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:23:46,818 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:46,818 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:47,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:47,032 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:47,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1512814711, now seen corresponding path program 62 times [2021-05-02 18:23:47,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:47,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510364670] [2021-05-02 18:23:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:48,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:48,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510364670] [2021-05-02 18:23:48,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510364670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:48,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069718256] [2021-05-02 18:23:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:48,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:23:48,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:23:48,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:48,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:48,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:49,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069718256] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:49,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:49,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 71 [2021-05-02 18:23:49,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002656431] [2021-05-02 18:23:49,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:23:49,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:49,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:23:49,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2157, Invalid=2813, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:23:49,287 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand has 71 states, 71 states have (on average 1.9295774647887325) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:52,418 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2021-05-02 18:23:52,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:23:52,421 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9295774647887325) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-02 18:23:52,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:52,421 INFO L225 Difference]: With dead ends: 142 [2021-05-02 18:23:52,421 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 18:23:52,422 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2706 ImplicationChecksByTransitivity, 4667.2ms TimeCoverageRelationStatistics Valid=6329, Invalid=12031, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:23:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 18:23:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-05-02 18:23:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.0075187969924813) internal successors, (134), 133 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-05-02 18:23:52,424 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135 [2021-05-02 18:23:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:52,424 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-05-02 18:23:52,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 1.9295774647887325) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:52,424 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-05-02 18:23:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 18:23:52,425 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:52,425 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:52,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:52,639 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:52,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1239935500, now seen corresponding path program 63 times [2021-05-02 18:23:52,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:52,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471191653] [2021-05-02 18:23:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:54,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:54,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:54,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471191653] [2021-05-02 18:23:54,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471191653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:54,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368357139] [2021-05-02 18:23:54,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:54,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-05-02 18:23:54,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:23:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:23:54,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:23:54,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:54,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:23:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3969 backedges. 0 proven. 3969 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:55,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368357139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:23:55,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:23:55,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 72 [2021-05-02 18:23:55,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837284067] [2021-05-02 18:23:55,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:23:55,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:55,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:23:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2223, Invalid=2889, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:23:55,054 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 72 states, 72 states have (on average 1.9305555555555556) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:58,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:58,297 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-05-02 18:23:58,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:23:58,298 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9305555555555556) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-02 18:23:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:58,299 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:23:58,299 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 18:23:58,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 4794.5ms TimeCoverageRelationStatistics Valid=6525, Invalid=12381, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 18:23:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 18:23:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-05-02 18:23:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.0074074074074073) internal successors, (136), 135 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2021-05-02 18:23:58,302 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137 [2021-05-02 18:23:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:58,302 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2021-05-02 18:23:58,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.9305555555555556) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:23:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2021-05-02 18:23:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 18:23:58,303 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:58,303 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:58,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:23:58,503 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash -933033935, now seen corresponding path program 64 times [2021-05-02 18:23:58,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:58,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255297635] [2021-05-02 18:23:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:00,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:00,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255297635] [2021-05-02 18:24:00,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255297635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:00,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103998471] [2021-05-02 18:24:00,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:00,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:00,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:00,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 18:24:00,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:00,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:00,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103998471] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:00,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:00,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 73 [2021-05-02 18:24:00,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621947964] [2021-05-02 18:24:00,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:24:00,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:24:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2290, Invalid=2966, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:24:00,928 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand has 73 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:04,262 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2021-05-02 18:24:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 18:24:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-02 18:24:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:04,263 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:24:04,263 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:24:04,264 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 4961.3ms TimeCoverageRelationStatistics Valid=6724, Invalid=12736, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:24:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:24:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-05-02 18:24:04,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-05-02 18:24:04,266 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139 [2021-05-02 18:24:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:04,266 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-05-02 18:24:04,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 1.9315068493150684) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-05-02 18:24:04,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:24:04,267 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:04,267 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:04,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:04,469 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:04,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:04,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1941593902, now seen corresponding path program 65 times [2021-05-02 18:24:04,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:04,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548516511] [2021-05-02 18:24:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:06,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:06,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:06,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548516511] [2021-05-02 18:24:06,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548516511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:06,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216766177] [2021-05-02 18:24:06,467 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:06,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:24:06,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:06,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:24:06,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:06,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 0 proven. 4225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:06,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216766177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:06,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:06,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 74 [2021-05-02 18:24:06,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074775755] [2021-05-02 18:24:07,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 18:24:07,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:07,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 18:24:07,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2358, Invalid=3044, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:24:07,001 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 74 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:10,499 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2021-05-02 18:24:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:24:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 18:24:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:10,500 INFO L225 Difference]: With dead ends: 148 [2021-05-02 18:24:10,500 INFO L226 Difference]: Without dead ends: 145 [2021-05-02 18:24:10,500 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 5159.8ms TimeCoverageRelationStatistics Valid=6926, Invalid=13096, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:24:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-02 18:24:10,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-05-02 18:24:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-05-02 18:24:10,502 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141 [2021-05-02 18:24:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:10,502 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-05-02 18:24:10,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.9324324324324325) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-05-02 18:24:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:24:10,503 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:10,503 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:10,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 18:24:10,703 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:10,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:10,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1499993365, now seen corresponding path program 66 times [2021-05-02 18:24:10,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:10,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884899829] [2021-05-02 18:24:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:12,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:12,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884899829] [2021-05-02 18:24:12,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884899829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:12,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852125413] [2021-05-02 18:24:12,718 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:12,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-05-02 18:24:12,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:12,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:24:12,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:12,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:12,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:13,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852125413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:13,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:13,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 75 [2021-05-02 18:24:13,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312355740] [2021-05-02 18:24:13,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:24:13,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:13,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:24:13,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2427, Invalid=3123, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:24:13,254 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 75 states, 75 states have (on average 1.9333333333333333) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:16,841 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2021-05-02 18:24:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:24:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.9333333333333333) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-02 18:24:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:16,842 INFO L225 Difference]: With dead ends: 150 [2021-05-02 18:24:16,842 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 18:24:16,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3012 ImplicationChecksByTransitivity, 5242.4ms TimeCoverageRelationStatistics Valid=7131, Invalid=13461, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 18:24:16,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 18:24:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-05-02 18:24:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-05-02 18:24:16,845 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143 [2021-05-02 18:24:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:16,845 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-05-02 18:24:16,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 1.9333333333333333) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-05-02 18:24:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 18:24:16,846 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:16,846 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:17,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 18:24:17,053 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:17,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1740539032, now seen corresponding path program 67 times [2021-05-02 18:24:17,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:17,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136287302] [2021-05-02 18:24:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:19,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:19,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:19,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136287302] [2021-05-02 18:24:19,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136287302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:19,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849012703] [2021-05-02 18:24:19,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:19,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:24:19,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:19,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4489 backedges. 0 proven. 4489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:19,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849012703] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:19,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:19,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 76 [2021-05-02 18:24:19,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739303191] [2021-05-02 18:24:19,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:24:19,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:24:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=3203, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:24:19,718 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:23,411 INFO L93 Difference]: Finished difference Result 152 states and 152 transitions. [2021-05-02 18:24:23,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 18:24:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 18:24:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:23,412 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:24:23,412 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:24:23,414 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 5454.6ms TimeCoverageRelationStatistics Valid=7339, Invalid=13831, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:24:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:24:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-02 18:24:23,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.006993006993007) internal successors, (144), 143 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-05-02 18:24:23,416 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145 [2021-05-02 18:24:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:23,416 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-05-02 18:24:23,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:23,416 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-05-02 18:24:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 18:24:23,417 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:23,417 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:23,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:23,633 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:23,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:23,633 INFO L82 PathProgramCache]: Analyzing trace with hash -976691035, now seen corresponding path program 68 times [2021-05-02 18:24:23,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:23,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267236570] [2021-05-02 18:24:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:25,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:25,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:25,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267236570] [2021-05-02 18:24:25,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267236570] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:25,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227787104] [2021-05-02 18:24:25,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:25,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:24:25,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:25,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 77 conjunts are in the unsatisfiable core [2021-05-02 18:24:25,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:25,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:26,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227787104] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:26,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:26,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 78 [2021-05-02 18:24:26,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791710203] [2021-05-02 18:24:26,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:24:26,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:26,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:24:26,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2570, Invalid=3436, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:24:26,344 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 78 states, 78 states have (on average 1.9230769230769231) internal successors, (150), 75 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:30,770 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-05-02 18:24:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 18:24:30,771 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.9230769230769231) internal successors, (150), 75 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 147 [2021-05-02 18:24:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:30,771 INFO L225 Difference]: With dead ends: 154 [2021-05-02 18:24:30,771 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 18:24:30,772 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3242 ImplicationChecksByTransitivity, 6241.1ms TimeCoverageRelationStatistics Valid=7698, Invalid=14652, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 18:24:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 18:24:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2021-05-02 18:24:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.006896551724138) internal successors, (146), 145 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2021-05-02 18:24:30,775 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147 [2021-05-02 18:24:30,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:30,775 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2021-05-02 18:24:30,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.9230769230769231) internal successors, (150), 75 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:24:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2021-05-02 18:24:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:24:30,776 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:30,776 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:30,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:24:30,989 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1358173534, now seen corresponding path program 69 times [2021-05-02 18:24:30,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:30,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139285332] [2021-05-02 18:24:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:33,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:33,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:33,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:33,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139285332] [2021-05-02 18:24:33,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139285332] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:33,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988214330] [2021-05-02 18:24:33,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:33,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 18:24:33,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:33,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:24:33,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:33,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 0 proven. 4761 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:33,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988214330] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:33,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:33,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 78 [2021-05-02 18:24:33,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565364800] [2021-05-02 18:24:33,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:24:33,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:33,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:24:33,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2640, Invalid=3366, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:24:33,839 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand has 78 states, 78 states have (on average 1.935897435897436) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:37,781 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-05-02 18:24:37,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:24:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.935897435897436) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-02 18:24:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:37,782 INFO L225 Difference]: With dead ends: 156 [2021-05-02 18:24:37,782 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 18:24:37,783 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 5762.6ms TimeCoverageRelationStatistics Valid=7764, Invalid=14586, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 18:24:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 18:24:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-05-02 18:24:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-05-02 18:24:37,785 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149 [2021-05-02 18:24:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:37,785 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-05-02 18:24:37,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.935897435897436) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-05-02 18:24:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:24:37,786 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:37,786 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:38,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 18:24:38,001 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1404332383, now seen corresponding path program 70 times [2021-05-02 18:24:38,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:38,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722479428] [2021-05-02 18:24:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:40,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:40,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:40,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722479428] [2021-05-02 18:24:40,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722479428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:40,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891499078] [2021-05-02 18:24:40,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:40,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:24:40,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:40,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 18:24:40,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:40,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891499078] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:40,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:40,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 79 [2021-05-02 18:24:40,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835019635] [2021-05-02 18:24:40,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:24:40,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:40,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:24:40,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2713, Invalid=3449, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:24:40,846 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 79 states, 79 states have (on average 1.9367088607594938) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:44,858 INFO L93 Difference]: Finished difference Result 158 states and 158 transitions. [2021-05-02 18:24:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 18:24:44,858 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.9367088607594938) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-02 18:24:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:44,859 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:24:44,859 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:24:44,860 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3334 ImplicationChecksByTransitivity, 5936.8ms TimeCoverageRelationStatistics Valid=7981, Invalid=14971, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:24:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:24:44,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-05-02 18:24:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 149 states have (on average 1.0067114093959733) internal successors, (150), 149 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-05-02 18:24:44,861 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151 [2021-05-02 18:24:44,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:44,861 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-05-02 18:24:44,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.9367088607594938) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:44,861 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-05-02 18:24:44,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 18:24:44,862 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:44,862 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:45,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-05-02 18:24:45,087 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1882729692, now seen corresponding path program 71 times [2021-05-02 18:24:45,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:45,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789033062] [2021-05-02 18:24:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:47,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:47,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789033062] [2021-05-02 18:24:47,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789033062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:47,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332234934] [2021-05-02 18:24:47,433 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:47,593 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-02 18:24:47,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:47,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:24:47,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 5041 backedges. 0 proven. 5041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:47,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332234934] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:47,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:47,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 80 [2021-05-02 18:24:47,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338209651] [2021-05-02 18:24:47,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 18:24:47,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:47,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 18:24:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2787, Invalid=3533, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:24:47,991 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 80 states, 80 states have (on average 1.9375) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:52,061 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2021-05-02 18:24:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:24:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.9375) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-02 18:24:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:52,062 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:24:52,062 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 18:24:52,063 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 6077.3ms TimeCoverageRelationStatistics Valid=8201, Invalid=15361, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:24:52,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 18:24:52,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-02 18:24:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.0066225165562914) internal successors, (152), 151 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2021-05-02 18:24:52,064 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153 [2021-05-02 18:24:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:52,064 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2021-05-02 18:24:52,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.9375) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2021-05-02 18:24:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:24:52,065 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:52,065 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:52,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:52,266 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2061042969, now seen corresponding path program 72 times [2021-05-02 18:24:52,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:52,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67119094] [2021-05-02 18:24:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:24:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:24:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:54,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:24:54,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67119094] [2021-05-02 18:24:54,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67119094] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:54,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172591236] [2021-05-02 18:24:54,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:54,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-02 18:24:54,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:24:54,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:24:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:24:54,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:54,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:24:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:24:55,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172591236] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:24:55,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:24:55,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 81 [2021-05-02 18:24:55,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576326967] [2021-05-02 18:24:55,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:24:55,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:24:55,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:24:55,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2862, Invalid=3618, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:24:55,343 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:24:59,441 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2021-05-02 18:24:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:24:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-02 18:24:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:24:59,443 INFO L225 Difference]: With dead ends: 162 [2021-05-02 18:24:59,443 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 18:24:59,444 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3501 ImplicationChecksByTransitivity, 6243.1ms TimeCoverageRelationStatistics Valid=8424, Invalid=15756, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 18:24:59,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 18:24:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-05-02 18:24:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0065359477124183) internal successors, (154), 153 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-05-02 18:24:59,446 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155 [2021-05-02 18:24:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:24:59,446 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-05-02 18:24:59,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 1.9382716049382716) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:24:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-05-02 18:24:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:24:59,446 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:24:59,447 INFO L523 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:24:59,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:24:59,647 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:24:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:24:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1621410326, now seen corresponding path program 73 times [2021-05-02 18:24:59,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:24:59,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582946922] [2021-05-02 18:24:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:24:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:02,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:02,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582946922] [2021-05-02 18:25:02,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582946922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679183084] [2021-05-02 18:25:02,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:02,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 18:25:02,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:02,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 0 proven. 5329 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:02,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679183084] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:02,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:02,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 82 [2021-05-02 18:25:02,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635064553] [2021-05-02 18:25:02,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:25:02,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:02,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:25:02,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2938, Invalid=3704, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:25:02,923 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 82 states, 82 states have (on average 1.9390243902439024) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:07,183 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2021-05-02 18:25:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:25:07,184 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.9390243902439024) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 18:25:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:07,184 INFO L225 Difference]: With dead ends: 164 [2021-05-02 18:25:07,184 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 18:25:07,185 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 6463.4ms TimeCoverageRelationStatistics Valid=8650, Invalid=16156, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:25:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 18:25:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2021-05-02 18:25:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions. [2021-05-02 18:25:07,188 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157 [2021-05-02 18:25:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:07,188 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions. [2021-05-02 18:25:07,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.9390243902439024) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions. [2021-05-02 18:25:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:25:07,189 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:07,189 INFO L523 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:07,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:07,413 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:07,413 INFO L82 PathProgramCache]: Analyzing trace with hash 41235411, now seen corresponding path program 74 times [2021-05-02 18:25:07,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:07,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480524698] [2021-05-02 18:25:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:10,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:10,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:10,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480524698] [2021-05-02 18:25:10,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480524698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:10,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457699393] [2021-05-02 18:25:10,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:10,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:25:10,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:10,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:25:10,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:10,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:10,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457699393] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:10,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:10,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 83 [2021-05-02 18:25:10,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298411609] [2021-05-02 18:25:10,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:25:10,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:25:10,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3015, Invalid=3791, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:25:10,661 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand has 83 states, 83 states have (on average 1.9397590361445782) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:15,025 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2021-05-02 18:25:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:25:15,025 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.9397590361445782) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-02 18:25:15,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:15,026 INFO L225 Difference]: With dead ends: 166 [2021-05-02 18:25:15,026 INFO L226 Difference]: Without dead ends: 163 [2021-05-02 18:25:15,027 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 6701.6ms TimeCoverageRelationStatistics Valid=8879, Invalid=16561, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:25:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-02 18:25:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-05-02 18:25:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 157 states have (on average 1.0063694267515924) internal successors, (158), 157 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-05-02 18:25:15,029 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159 [2021-05-02 18:25:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:15,029 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-05-02 18:25:15,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 1.9397590361445782) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-05-02 18:25:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 18:25:15,030 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:15,030 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:15,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-05-02 18:25:15,237 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1911564880, now seen corresponding path program 75 times [2021-05-02 18:25:15,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:15,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571666944] [2021-05-02 18:25:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:17,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:17,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571666944] [2021-05-02 18:25:17,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571666944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:17,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520207015] [2021-05-02 18:25:17,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:18,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-05-02 18:25:18,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:25:18,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:18,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5625 backedges. 0 proven. 5625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:18,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520207015] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:18,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:18,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 84 [2021-05-02 18:25:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076999298] [2021-05-02 18:25:18,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:25:18,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:18,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:25:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3093, Invalid=3879, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:25:18,643 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 84 states, 84 states have (on average 1.9404761904761905) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:23,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:23,268 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-05-02 18:25:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:25:23,269 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9404761904761905) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-02 18:25:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:23,269 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:25:23,269 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 18:25:23,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 6943.3ms TimeCoverageRelationStatistics Valid=9111, Invalid=16971, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 18:25:23,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 18:25:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 18:25:23,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.0062893081761006) internal successors, (160), 159 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-05-02 18:25:23,274 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161 [2021-05-02 18:25:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:23,274 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-05-02 18:25:23,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9404761904761905) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:23,274 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-05-02 18:25:23,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:25:23,275 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:23,275 INFO L523 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:23,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:23,497 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:23,497 INFO L82 PathProgramCache]: Analyzing trace with hash -293112435, now seen corresponding path program 76 times [2021-05-02 18:25:23,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:23,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236521156] [2021-05-02 18:25:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:26,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:26,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236521156] [2021-05-02 18:25:26,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236521156] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:26,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815587280] [2021-05-02 18:25:26,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:26,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:25:26,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 18:25:26,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:26,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:26,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815587280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:26,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:26,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 85 [2021-05-02 18:25:26,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141398798] [2021-05-02 18:25:26,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:25:26,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:26,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:25:26,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3172, Invalid=3968, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:25:26,856 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:31,540 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2021-05-02 18:25:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 18:25:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-02 18:25:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:31,541 INFO L225 Difference]: With dead ends: 170 [2021-05-02 18:25:31,541 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 18:25:31,542 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3847 ImplicationChecksByTransitivity, 7018.1ms TimeCoverageRelationStatistics Valid=9346, Invalid=17386, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:25:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 18:25:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-05-02 18:25:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.0062111801242235) internal successors, (162), 161 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-05-02 18:25:31,544 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163 [2021-05-02 18:25:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:31,544 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-05-02 18:25:31,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-05-02 18:25:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:25:31,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:31,545 INFO L523 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:31,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:31,765 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:31,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:31,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1569135222, now seen corresponding path program 77 times [2021-05-02 18:25:31,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:31,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957144542] [2021-05-02 18:25:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:34,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:34,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:34,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957144542] [2021-05-02 18:25:34,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957144542] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:34,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661763249] [2021-05-02 18:25:34,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:34,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-02 18:25:34,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:34,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:25:34,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:34,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:34,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:35,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661763249] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:35,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:35,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 86 [2021-05-02 18:25:35,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14403821] [2021-05-02 18:25:35,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 18:25:35,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:35,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 18:25:35,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=4058, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:25:35,183 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 86 states, 86 states have (on average 1.941860465116279) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:40,022 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2021-05-02 18:25:40,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:25:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.941860465116279) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 18:25:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:40,024 INFO L225 Difference]: With dead ends: 172 [2021-05-02 18:25:40,024 INFO L226 Difference]: Without dead ends: 169 [2021-05-02 18:25:40,025 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3936 ImplicationChecksByTransitivity, 7176.9ms TimeCoverageRelationStatistics Valid=9584, Invalid=17806, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:25:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-02 18:25:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-05-02 18:25:40,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.0061349693251533) internal successors, (164), 163 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-05-02 18:25:40,027 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165 [2021-05-02 18:25:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:40,027 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-05-02 18:25:40,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.941860465116279) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-05-02 18:25:40,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:25:40,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:40,028 INFO L523 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:40,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-02 18:25:40,245 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash 533613127, now seen corresponding path program 78 times [2021-05-02 18:25:40,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:40,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178744415] [2021-05-02 18:25:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:43,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:43,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:43,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178744415] [2021-05-02 18:25:43,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178744415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:43,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468874433] [2021-05-02 18:25:43,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:43,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:25:43,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:25:43,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:25:43,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:43,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:43,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:44,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468874433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:44,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:44,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 87 [2021-05-02 18:25:44,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620859487] [2021-05-02 18:25:44,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:25:44,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:44,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:25:44,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3333, Invalid=4149, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:25:44,129 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 87 states, 87 states have (on average 1.9425287356321839) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:49,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:49,176 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2021-05-02 18:25:49,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:25:49,177 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.9425287356321839) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-02 18:25:49,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:49,177 INFO L225 Difference]: With dead ends: 174 [2021-05-02 18:25:49,177 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 18:25:49,178 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4026 ImplicationChecksByTransitivity, 7804.5ms TimeCoverageRelationStatistics Valid=9825, Invalid=18231, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 18:25:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 18:25:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2021-05-02 18:25:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.006060606060606) internal successors, (166), 165 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-05-02 18:25:49,180 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167 [2021-05-02 18:25:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:49,180 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-05-02 18:25:49,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 1.9425287356321839) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-05-02 18:25:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 18:25:49,181 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:49,181 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:49,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 18:25:49,381 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:49,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1654819900, now seen corresponding path program 79 times [2021-05-02 18:25:49,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:49,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908775576] [2021-05-02 18:25:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:25:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:52,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:52,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:25:52,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908775576] [2021-05-02 18:25:52,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908775576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:52,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314559706] [2021-05-02 18:25:52,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:25:52,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:25:52,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:25:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:25:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6241 backedges. 0 proven. 6241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:25:52,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314559706] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:25:52,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:25:52,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 88 [2021-05-02 18:25:52,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881388501] [2021-05-02 18:25:52,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:25:52,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:25:52,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:25:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3415, Invalid=4241, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:25:52,952 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:25:57,963 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2021-05-02 18:25:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 18:25:57,963 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-02 18:25:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:25:57,964 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:25:57,964 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 18:25:57,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 7519.1ms TimeCoverageRelationStatistics Valid=10069, Invalid=18661, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:25:57,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 18:25:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-02 18:25:57,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-05-02 18:25:57,967 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 169 [2021-05-02 18:25:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:25:57,967 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-05-02 18:25:57,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.9431818181818181) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:25:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-05-02 18:25:57,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 18:25:57,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:25:57,968 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:25:58,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:25:58,169 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:25:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:25:58,169 INFO L82 PathProgramCache]: Analyzing trace with hash -204983807, now seen corresponding path program 80 times [2021-05-02 18:25:58,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:25:58,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360991839] [2021-05-02 18:25:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:25:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:01,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:01,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360991839] [2021-05-02 18:26:01,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360991839] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:01,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714880727] [2021-05-02 18:26:01,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:01,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:26:01,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:01,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 953 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:26:01,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:01,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:01,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714880727] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:01,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:01,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 89 [2021-05-02 18:26:01,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889930809] [2021-05-02 18:26:01,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 18:26:01,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:01,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 18:26:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3498, Invalid=4334, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 18:26:01,784 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:06,917 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2021-05-02 18:26:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:26:06,918 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-02 18:26:06,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:06,919 INFO L225 Difference]: With dead ends: 178 [2021-05-02 18:26:06,919 INFO L226 Difference]: Without dead ends: 175 [2021-05-02 18:26:06,920 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4209 ImplicationChecksByTransitivity, 7665.6ms TimeCoverageRelationStatistics Valid=10316, Invalid=19096, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:26:06,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-02 18:26:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-05-02 18:26:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.0059171597633136) internal successors, (170), 169 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-05-02 18:26:06,922 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 171 [2021-05-02 18:26:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:06,922 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-05-02 18:26:06,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-05-02 18:26:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:26:06,923 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:06,923 INFO L523 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:07,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:07,149 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:07,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:07,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1518097662, now seen corresponding path program 81 times [2021-05-02 18:26:07,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:07,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240907779] [2021-05-02 18:26:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:10,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:10,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240907779] [2021-05-02 18:26:10,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240907779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:10,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509447787] [2021-05-02 18:26:10,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:10,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-05-02 18:26:10,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:10,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:26:10,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:10,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:10,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 0 proven. 6561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:11,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509447787] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:11,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:11,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 90 [2021-05-02 18:26:11,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916767799] [2021-05-02 18:26:11,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:26:11,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:26:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3582, Invalid=4428, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:26:11,030 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 90 states, 90 states have (on average 1.9444444444444444) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:16,208 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-05-02 18:26:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:26:16,208 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.9444444444444444) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-02 18:26:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:16,209 INFO L225 Difference]: With dead ends: 180 [2021-05-02 18:26:16,209 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 18:26:16,210 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4302 ImplicationChecksByTransitivity, 7922.7ms TimeCoverageRelationStatistics Valid=10566, Invalid=19536, Unknown=0, NotChecked=0, Total=30102 [2021-05-02 18:26:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 18:26:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2021-05-02 18:26:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.0058479532163742) internal successors, (172), 171 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-05-02 18:26:16,212 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 173 [2021-05-02 18:26:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:16,212 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-05-02 18:26:16,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.9444444444444444) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-05-02 18:26:16,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:26:16,213 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:16,213 INFO L523 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:16,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:16,431 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:16,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:16,431 INFO L82 PathProgramCache]: Analyzing trace with hash -457986885, now seen corresponding path program 82 times [2021-05-02 18:26:16,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:16,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76053768] [2021-05-02 18:26:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:19,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:19,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76053768] [2021-05-02 18:26:19,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76053768] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:19,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083767815] [2021-05-02 18:26:19,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:19,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:26:19,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:19,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 18:26:19,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:19,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:19,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:20,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083767815] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:20,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:20,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 91 [2021-05-02 18:26:20,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786259891] [2021-05-02 18:26:20,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:26:20,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:26:20,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3667, Invalid=4523, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:26:20,309 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 91 states, 91 states have (on average 1.945054945054945) internal successors, (177), 88 states have internal predecessors, (177), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:25,693 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2021-05-02 18:26:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 18:26:25,693 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.945054945054945) internal successors, (177), 88 states have internal predecessors, (177), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-02 18:26:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:25,694 INFO L225 Difference]: With dead ends: 182 [2021-05-02 18:26:25,694 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 18:26:25,695 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4396 ImplicationChecksByTransitivity, 8229.9ms TimeCoverageRelationStatistics Valid=10819, Invalid=19981, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:26:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 18:26:25,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-05-02 18:26:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0057803468208093) internal successors, (174), 173 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-05-02 18:26:25,697 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 175 [2021-05-02 18:26:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:25,697 INFO L480 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-05-02 18:26:25,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 1.945054945054945) internal successors, (177), 88 states have internal predecessors, (177), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:25,697 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-05-02 18:26:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 18:26:25,697 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:25,697 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:25,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:25,898 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:25,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:25,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1099691720, now seen corresponding path program 83 times [2021-05-02 18:26:25,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:25,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898585536] [2021-05-02 18:26:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:29,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:29,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898585536] [2021-05-02 18:26:29,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898585536] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:29,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657634424] [2021-05-02 18:26:29,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:29,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-02 18:26:29,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:29,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:26:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:29,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6889 backedges. 0 proven. 6889 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:29,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657634424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:29,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:29,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 92 [2021-05-02 18:26:29,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600196541] [2021-05-02 18:26:29,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:26:29,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:29,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:26:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3753, Invalid=4619, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:26:29,962 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 92 states, 92 states have (on average 1.9456521739130435) internal successors, (179), 89 states have internal predecessors, (179), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:35,317 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-05-02 18:26:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:26:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.9456521739130435) internal successors, (179), 89 states have internal predecessors, (179), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 18:26:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:35,318 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:26:35,318 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 18:26:35,319 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4491 ImplicationChecksByTransitivity, 8368.7ms TimeCoverageRelationStatistics Valid=11075, Invalid=20431, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:26:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 18:26:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-02 18:26:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.0057142857142858) internal successors, (176), 175 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-05-02 18:26:35,321 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 177 [2021-05-02 18:26:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:35,321 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-05-02 18:26:35,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.9456521739130435) internal successors, (179), 89 states have internal predecessors, (179), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-05-02 18:26:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:26:35,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:35,322 INFO L523 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:35,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:35,523 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:35,523 INFO L82 PathProgramCache]: Analyzing trace with hash 697252469, now seen corresponding path program 84 times [2021-05-02 18:26:35,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:35,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598312496] [2021-05-02 18:26:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:38,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:38,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:38,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:38,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598312496] [2021-05-02 18:26:38,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598312496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:38,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42496796] [2021-05-02 18:26:38,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:39,177 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-05-02 18:26:39,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:39,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 997 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:26:39,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:39,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:39,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42496796] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:39,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:39,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 93 [2021-05-02 18:26:39,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932080855] [2021-05-02 18:26:39,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:26:39,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:26:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3840, Invalid=4716, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:26:39,679 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 93 states, 93 states have (on average 1.946236559139785) internal successors, (181), 90 states have internal predecessors, (181), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:45,138 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2021-05-02 18:26:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:26:45,139 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 1.946236559139785) internal successors, (181), 90 states have internal predecessors, (181), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 179 [2021-05-02 18:26:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:45,139 INFO L225 Difference]: With dead ends: 186 [2021-05-02 18:26:45,139 INFO L226 Difference]: Without dead ends: 183 [2021-05-02 18:26:45,149 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4587 ImplicationChecksByTransitivity, 8491.8ms TimeCoverageRelationStatistics Valid=11334, Invalid=20886, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:26:45,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-05-02 18:26:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-05-02 18:26:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.0056497175141244) internal successors, (178), 177 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-05-02 18:26:45,151 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 179 [2021-05-02 18:26:45,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:45,151 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-05-02 18:26:45,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 1.946236559139785) internal successors, (181), 90 states have internal predecessors, (181), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-05-02 18:26:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:26:45,153 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:45,153 INFO L523 BasicCegarLoop]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:45,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-05-02 18:26:45,377 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash 983765106, now seen corresponding path program 85 times [2021-05-02 18:26:45,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:45,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098746636] [2021-05-02 18:26:45,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:49,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:49,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098746636] [2021-05-02 18:26:49,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098746636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:49,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169055973] [2021-05-02 18:26:49,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:49,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 18:26:49,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:49,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 0 proven. 7225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:49,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169055973] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:49,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:49,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 94 [2021-05-02 18:26:49,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440677940] [2021-05-02 18:26:49,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:26:49,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:49,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:26:49,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3928, Invalid=4814, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:26:49,653 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 94 states, 94 states have (on average 1.946808510638298) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:26:55,289 INFO L93 Difference]: Finished difference Result 188 states and 188 transitions. [2021-05-02 18:26:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:26:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.946808510638298) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 18:26:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:26:55,290 INFO L225 Difference]: With dead ends: 188 [2021-05-02 18:26:55,290 INFO L226 Difference]: Without dead ends: 185 [2021-05-02 18:26:55,292 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 8798.2ms TimeCoverageRelationStatistics Valid=11596, Invalid=21346, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:26:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-05-02 18:26:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-05-02 18:26:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.005586592178771) internal successors, (180), 179 states have internal predecessors, (180), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-05-02 18:26:55,294 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 181 [2021-05-02 18:26:55,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:26:55,294 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-05-02 18:26:55,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.946808510638298) internal successors, (183), 91 states have internal predecessors, (183), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:26:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-05-02 18:26:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:26:55,295 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:26:55,295 INFO L523 BasicCegarLoop]: trace histogram [86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:26:55,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:55,496 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:26:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:26:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1444502319, now seen corresponding path program 86 times [2021-05-02 18:26:55,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:26:55,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712603239] [2021-05-02 18:26:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:26:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:26:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:26:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:59,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:26:59,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712603239] [2021-05-02 18:26:59,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712603239] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:59,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386561197] [2021-05-02 18:26:59,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:26:59,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:26:59,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:26:59,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:26:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:26:59,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:26:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:26:59,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386561197] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:26:59,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:26:59,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 95 [2021-05-02 18:26:59,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898332853] [2021-05-02 18:26:59,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:26:59,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:26:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:26:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4017, Invalid=4913, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:26:59,759 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 92 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:05,633 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2021-05-02 18:27:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:27:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 92 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-02 18:27:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:05,634 INFO L225 Difference]: With dead ends: 190 [2021-05-02 18:27:05,634 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 18:27:05,635 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4782 ImplicationChecksByTransitivity, 8916.8ms TimeCoverageRelationStatistics Valid=11861, Invalid=21811, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:27:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 18:27:05,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-05-02 18:27:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 181 states have (on average 1.0055248618784531) internal successors, (182), 181 states have internal predecessors, (182), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-05-02 18:27:05,638 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 183 [2021-05-02 18:27:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:05,638 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-05-02 18:27:05,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 1.9473684210526316) internal successors, (185), 92 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-05-02 18:27:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 18:27:05,639 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:05,639 INFO L523 BasicCegarLoop]: trace histogram [87, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:05,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-05-02 18:27:05,853 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:05,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:05,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1831332524, now seen corresponding path program 87 times [2021-05-02 18:27:05,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:05,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031559159] [2021-05-02 18:27:05,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:09,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:09,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031559159] [2021-05-02 18:27:09,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031559159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:09,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315536569] [2021-05-02 18:27:09,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:09,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2021-05-02 18:27:09,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:09,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:27:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7569 backedges. 0 proven. 7569 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:10,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315536569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:10,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:10,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 96 [2021-05-02 18:27:10,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852345155] [2021-05-02 18:27:10,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:27:10,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:10,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:27:10,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4107, Invalid=5013, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:27:10,248 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 96 states, 96 states have (on average 1.9479166666666667) internal successors, (187), 93 states have internal predecessors, (187), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:16,290 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-05-02 18:27:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:27:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.9479166666666667) internal successors, (187), 93 states have internal predecessors, (187), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-02 18:27:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:16,292 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:27:16,292 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 18:27:16,293 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4881 ImplicationChecksByTransitivity, 9113.9ms TimeCoverageRelationStatistics Valid=12129, Invalid=22281, Unknown=0, NotChecked=0, Total=34410 [2021-05-02 18:27:16,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 18:27:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-02 18:27:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.005464480874317) internal successors, (184), 183 states have internal predecessors, (184), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-05-02 18:27:16,295 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 185 [2021-05-02 18:27:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:16,295 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-05-02 18:27:16,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.9479166666666667) internal successors, (187), 93 states have internal predecessors, (187), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-05-02 18:27:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 18:27:16,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:16,296 INFO L523 BasicCegarLoop]: trace histogram [88, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:16,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 18:27:16,517 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:16,517 INFO L82 PathProgramCache]: Analyzing trace with hash -86995223, now seen corresponding path program 88 times [2021-05-02 18:27:16,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:16,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239919530] [2021-05-02 18:27:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:20,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:20,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239919530] [2021-05-02 18:27:20,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239919530] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:20,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173409289] [2021-05-02 18:27:20,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:20,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:27:20,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:20,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 18:27:20,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:20,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:20,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173409289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:20,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:20,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 97 [2021-05-02 18:27:20,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791208434] [2021-05-02 18:27:20,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:27:20,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:20,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:27:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4198, Invalid=5114, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:27:20,924 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 97 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 94 states have internal predecessors, (189), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:26,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:26,991 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2021-05-02 18:27:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 18:27:26,992 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 94 states have internal predecessors, (189), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-02 18:27:26,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:26,992 INFO L225 Difference]: With dead ends: 194 [2021-05-02 18:27:26,992 INFO L226 Difference]: Without dead ends: 191 [2021-05-02 18:27:26,993 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 9323.0ms TimeCoverageRelationStatistics Valid=12400, Invalid=22756, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:27:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-05-02 18:27:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 190. [2021-05-02 18:27:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.0054054054054054) internal successors, (186), 185 states have internal predecessors, (186), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-05-02 18:27:26,995 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 187 [2021-05-02 18:27:26,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:26,995 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-05-02 18:27:26,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 94 states have internal predecessors, (189), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:26,996 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-05-02 18:27:26,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:27:26,996 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:26,997 INFO L523 BasicCegarLoop]: trace histogram [89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:27,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:27,220 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:27,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1058990106, now seen corresponding path program 89 times [2021-05-02 18:27:27,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:27,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808565979] [2021-05-02 18:27:27,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:31,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:31,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808565979] [2021-05-02 18:27:31,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808565979] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:31,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962252351] [2021-05-02 18:27:31,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:31,227 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:27:31,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:31,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 18:27:31,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 0 proven. 7921 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:31,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962252351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:31,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:31,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 98 [2021-05-02 18:27:31,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841422845] [2021-05-02 18:27:31,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 18:27:31,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 18:27:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=5216, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:27:31,765 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 98 states, 98 states have (on average 1.9489795918367347) internal successors, (191), 95 states have internal predecessors, (191), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:37,874 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-05-02 18:27:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:27:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.9489795918367347) internal successors, (191), 95 states have internal predecessors, (191), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 18:27:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:37,876 INFO L225 Difference]: With dead ends: 196 [2021-05-02 18:27:37,876 INFO L226 Difference]: Without dead ends: 193 [2021-05-02 18:27:37,877 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5082 ImplicationChecksByTransitivity, 9528.1ms TimeCoverageRelationStatistics Valid=12674, Invalid=23236, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:27:37,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-05-02 18:27:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-05-02 18:27:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0053475935828877) internal successors, (188), 187 states have internal predecessors, (188), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:37,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-05-02 18:27:37,879 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 189 [2021-05-02 18:27:37,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:37,879 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-05-02 18:27:37,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 1.9489795918367347) internal successors, (191), 95 states have internal predecessors, (191), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-05-02 18:27:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:27:37,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:37,880 INFO L523 BasicCegarLoop]: trace histogram [90, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:38,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:38,080 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1156797859, now seen corresponding path program 90 times [2021-05-02 18:27:38,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:38,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265544994] [2021-05-02 18:27:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:42,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:42,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:42,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265544994] [2021-05-02 18:27:42,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265544994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:42,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277504944] [2021-05-02 18:27:42,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:42,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-05-02 18:27:42,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:27:42,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1063 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 18:27:42,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:42,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:42,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277504944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:42,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:42,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 99 [2021-05-02 18:27:42,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237346197] [2021-05-02 18:27:42,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:27:42,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:42,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:27:42,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4383, Invalid=5319, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:27:42,828 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 99 states, 99 states have (on average 1.9494949494949494) internal successors, (193), 96 states have internal predecessors, (193), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:27:49,332 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2021-05-02 18:27:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:27:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.9494949494949494) internal successors, (193), 96 states have internal predecessors, (193), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 191 [2021-05-02 18:27:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:27:49,333 INFO L225 Difference]: With dead ends: 198 [2021-05-02 18:27:49,333 INFO L226 Difference]: Without dead ends: 195 [2021-05-02 18:27:49,335 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 9856.2ms TimeCoverageRelationStatistics Valid=12951, Invalid=23721, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 18:27:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-05-02 18:27:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-05-02 18:27:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 189 states have (on average 1.0052910052910053) internal successors, (190), 189 states have internal predecessors, (190), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-05-02 18:27:49,345 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 191 [2021-05-02 18:27:49,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:27:49,346 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-05-02 18:27:49,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 1.9494949494949494) internal successors, (193), 96 states have internal predecessors, (193), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:27:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-05-02 18:27:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 18:27:49,346 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:27:49,346 INFO L523 BasicCegarLoop]: trace histogram [91, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:27:49,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:49,547 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:27:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:27:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash 225253408, now seen corresponding path program 91 times [2021-05-02 18:27:49,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:27:49,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037370635] [2021-05-02 18:27:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:27:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:27:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:53,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:27:53,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037370635] [2021-05-02 18:27:53,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037370635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:53,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948171829] [2021-05-02 18:27:53,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:27:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:27:53,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:27:53,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:27:53,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:53,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:27:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8281 backedges. 0 proven. 8281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:27:54,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948171829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:27:54,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:27:54,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 100 [2021-05-02 18:27:54,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921521026] [2021-05-02 18:27:54,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:27:54,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:27:54,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:27:54,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4477, Invalid=5423, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:27:54,326 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 100 states, 100 states have (on average 1.95) internal successors, (195), 97 states have internal predecessors, (195), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:01,154 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2021-05-02 18:28:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:28:01,155 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.95) internal successors, (195), 97 states have internal predecessors, (195), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 18:28:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:01,156 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:28:01,156 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:28:01,157 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5287 ImplicationChecksByTransitivity, 10263.4ms TimeCoverageRelationStatistics Valid=13231, Invalid=24211, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:28:01,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:28:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 18:28:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.0052356020942408) internal successors, (192), 191 states have internal predecessors, (192), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 196 transitions. [2021-05-02 18:28:01,159 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 196 transitions. Word has length 193 [2021-05-02 18:28:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:01,159 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 196 transitions. [2021-05-02 18:28:01,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.95) internal successors, (195), 97 states have internal predecessors, (195), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 196 transitions. [2021-05-02 18:28:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:28:01,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:01,161 INFO L523 BasicCegarLoop]: trace histogram [92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:01,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:01,377 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1635766435, now seen corresponding path program 92 times [2021-05-02 18:28:01,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:01,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758785168] [2021-05-02 18:28:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:05,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:05,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:05,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758785168] [2021-05-02 18:28:05,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758785168] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:05,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754904630] [2021-05-02 18:28:05,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:05,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:28:05,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 101 conjunts are in the unsatisfiable core [2021-05-02 18:28:05,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:05,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:05,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:06,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754904630] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:06,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:06,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 102 [2021-05-02 18:28:06,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282560101] [2021-05-02 18:28:06,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:28:06,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:28:06,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4574, Invalid=5728, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:28:06,436 INFO L87 Difference]: Start difference. First operand 196 states and 196 transitions. Second operand has 102 states, 102 states have (on average 1.9411764705882353) internal successors, (198), 99 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:28:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:14,541 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2021-05-02 18:28:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:28:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.9411764705882353) internal successors, (198), 99 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 195 [2021-05-02 18:28:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:14,542 INFO L225 Difference]: With dead ends: 202 [2021-05-02 18:28:14,542 INFO L226 Difference]: Without dead ends: 199 [2021-05-02 18:28:14,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5486 ImplicationChecksByTransitivity, 11717.0ms TimeCoverageRelationStatistics Valid=13710, Invalid=25296, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 18:28:14,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-05-02 18:28:14,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-05-02 18:28:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.005181347150259) internal successors, (194), 193 states have internal predecessors, (194), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-05-02 18:28:14,545 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 195 [2021-05-02 18:28:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:14,546 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-05-02 18:28:14,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.9411764705882353) internal successors, (198), 99 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 18:28:14,546 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-05-02 18:28:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:28:14,547 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:14,547 INFO L523 BasicCegarLoop]: trace histogram [93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:14,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:14,761 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:14,761 INFO L82 PathProgramCache]: Analyzing trace with hash 925526874, now seen corresponding path program 93 times [2021-05-02 18:28:14,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:14,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983305708] [2021-05-02 18:28:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:19,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:19,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:19,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983305708] [2021-05-02 18:28:19,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983305708] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:19,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964669077] [2021-05-02 18:28:19,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:19,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2021-05-02 18:28:19,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:19,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 18:28:19,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:19,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:19,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 0 proven. 8649 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:20,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964669077] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:20,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:20,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 102 [2021-05-02 18:28:20,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513685478] [2021-05-02 18:28:20,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 18:28:20,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 18:28:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4668, Invalid=5634, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 18:28:20,137 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 102 states, 102 states have (on average 1.9509803921568627) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:27,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:27,730 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-05-02 18:28:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:28:27,731 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.9509803921568627) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 18:28:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:27,732 INFO L225 Difference]: With dead ends: 204 [2021-05-02 18:28:27,732 INFO L226 Difference]: Without dead ends: 201 [2021-05-02 18:28:27,733 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5496 ImplicationChecksByTransitivity, 11366.7ms TimeCoverageRelationStatistics Valid=13800, Invalid=25206, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 18:28:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-05-02 18:28:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2021-05-02 18:28:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.005128205128205) internal successors, (196), 195 states have internal predecessors, (196), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2021-05-02 18:28:27,735 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 197 [2021-05-02 18:28:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:27,735 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2021-05-02 18:28:27,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 1.9509803921568627) internal successors, (199), 99 states have internal predecessors, (199), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2021-05-02 18:28:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:28:27,736 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:27,736 INFO L523 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:27,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:27,937 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:27,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1312136215, now seen corresponding path program 94 times [2021-05-02 18:28:27,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:27,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377315569] [2021-05-02 18:28:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:32,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:32,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377315569] [2021-05-02 18:28:32,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377315569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:32,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001343286] [2021-05-02 18:28:32,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:32,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:28:32,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:32,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 18:28:32,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:32,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:33,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001343286] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:33,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:33,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 103 [2021-05-02 18:28:33,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814799800] [2021-05-02 18:28:33,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:28:33,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:33,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:28:33,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4765, Invalid=5741, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:28:33,491 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand has 103 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 100 states have internal predecessors, (201), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:41,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:41,234 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2021-05-02 18:28:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 18:28:41,235 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 100 states have internal predecessors, (201), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-02 18:28:41,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:41,236 INFO L225 Difference]: With dead ends: 206 [2021-05-02 18:28:41,236 INFO L226 Difference]: Without dead ends: 203 [2021-05-02 18:28:41,237 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5602 ImplicationChecksByTransitivity, 11795.5ms TimeCoverageRelationStatistics Valid=14089, Invalid=25711, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 18:28:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-05-02 18:28:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-05-02 18:28:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-05-02 18:28:41,239 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 199 [2021-05-02 18:28:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:41,239 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-05-02 18:28:41,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 1.9514563106796117) internal successors, (201), 100 states have internal predecessors, (201), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-05-02 18:28:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 18:28:41,240 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:41,240 INFO L523 BasicCegarLoop]: trace histogram [95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:41,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:41,445 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:41,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:41,445 INFO L82 PathProgramCache]: Analyzing trace with hash -818441836, now seen corresponding path program 95 times [2021-05-02 18:28:41,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:41,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423953717] [2021-05-02 18:28:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:28:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:28:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:46,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:28:46,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423953717] [2021-05-02 18:28:46,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423953717] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:46,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957726068] [2021-05-02 18:28:46,296 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:46,522 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2021-05-02 18:28:46,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:28:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 18:28:46,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:28:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:46,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:28:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9025 backedges. 0 proven. 9025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:28:47,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957726068] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:28:47,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:28:47,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 104 [2021-05-02 18:28:47,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498989455] [2021-05-02 18:28:47,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 18:28:47,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:28:47,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 18:28:47,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4863, Invalid=5849, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:28:47,200 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 104 states, 104 states have (on average 1.9519230769230769) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:55,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:28:55,006 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2021-05-02 18:28:55,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 18:28:55,007 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.9519230769230769) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-02 18:28:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:28:55,008 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:28:55,008 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:28:55,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5709 ImplicationChecksByTransitivity, 12081.9ms TimeCoverageRelationStatistics Valid=14381, Invalid=26221, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 18:28:55,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:28:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 18:28:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.0050251256281406) internal successors, (200), 199 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-05-02 18:28:55,012 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 201 [2021-05-02 18:28:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:28:55,012 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-05-02 18:28:55,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 1.9519230769230769) internal successors, (203), 101 states have internal predecessors, (203), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:28:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-05-02 18:28:55,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:28:55,013 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:28:55,013 INFO L523 BasicCegarLoop]: trace histogram [96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:28:55,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:28:55,214 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:28:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:28:55,214 INFO L82 PathProgramCache]: Analyzing trace with hash 395451345, now seen corresponding path program 96 times [2021-05-02 18:28:55,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:28:55,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697664013] [2021-05-02 18:28:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:28:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:00,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:00,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:00,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697664013] [2021-05-02 18:29:00,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697664013] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:00,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514205852] [2021-05-02 18:29:00,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:00,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2021-05-02 18:29:00,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:00,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 18:29:00,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:00,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:00,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:01,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514205852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:01,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:01,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 105 [2021-05-02 18:29:01,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910375795] [2021-05-02 18:29:01,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 18:29:01,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 18:29:01,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4962, Invalid=5958, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 18:29:01,108 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 105 states, 105 states have (on average 1.9523809523809523) internal successors, (205), 102 states have internal predecessors, (205), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:09,089 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2021-05-02 18:29:09,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 18:29:09,090 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.9523809523809523) internal successors, (205), 102 states have internal predecessors, (205), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-02 18:29:09,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:09,090 INFO L225 Difference]: With dead ends: 210 [2021-05-02 18:29:09,090 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 18:29:09,092 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5817 ImplicationChecksByTransitivity, 12340.1ms TimeCoverageRelationStatistics Valid=14676, Invalid=26736, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 18:29:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 18:29:09,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2021-05-02 18:29:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.0049751243781095) internal successors, (202), 201 states have internal predecessors, (202), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-05-02 18:29:09,093 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 203 [2021-05-02 18:29:09,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:09,094 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-05-02 18:29:09,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 1.9523809523809523) internal successors, (205), 102 states have internal predecessors, (205), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-05-02 18:29:09,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:29:09,095 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:09,095 INFO L523 BasicCegarLoop]: trace histogram [97, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:09,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2021-05-02 18:29:09,309 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:09,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1284306226, now seen corresponding path program 97 times [2021-05-02 18:29:09,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:09,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14360244] [2021-05-02 18:29:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:14,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:14,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14360244] [2021-05-02 18:29:14,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14360244] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:14,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936081184] [2021-05-02 18:29:14,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:14,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 18:29:14,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:14,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:14,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 0 proven. 9409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:15,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936081184] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:15,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:15,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 106 [2021-05-02 18:29:15,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261229116] [2021-05-02 18:29:15,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 18:29:15,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:15,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 18:29:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:29:15,341 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 106 states, 106 states have (on average 1.9528301886792452) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:23,908 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2021-05-02 18:29:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:29:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.9528301886792452) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 18:29:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:23,910 INFO L225 Difference]: With dead ends: 212 [2021-05-02 18:29:23,910 INFO L226 Difference]: Without dead ends: 209 [2021-05-02 18:29:23,912 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5926 ImplicationChecksByTransitivity, 13193.2ms TimeCoverageRelationStatistics Valid=14974, Invalid=27256, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 18:29:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-05-02 18:29:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-05-02 18:29:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.0049261083743843) internal successors, (204), 203 states have internal predecessors, (204), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-05-02 18:29:23,915 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 205 [2021-05-02 18:29:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:23,915 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-05-02 18:29:23,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 1.9528301886792452) internal successors, (207), 103 states have internal predecessors, (207), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-05-02 18:29:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:29:23,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:23,916 INFO L523 BasicCegarLoop]: trace histogram [98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:24,132 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:24,133 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash -623628661, now seen corresponding path program 98 times [2021-05-02 18:29:24,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:24,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038797590] [2021-05-02 18:29:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:29,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:29,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038797590] [2021-05-02 18:29:29,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038797590] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:29,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593229280] [2021-05-02 18:29:29,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:29,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:29:29,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 18:29:29,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:29,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:30,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593229280] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:30,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:30,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 107 [2021-05-02 18:29:30,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267799582] [2021-05-02 18:29:30,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:29:30,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:30,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:29:30,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5163, Invalid=6179, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:29:30,542 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 107 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 104 states have internal predecessors, (209), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:39,436 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2021-05-02 18:29:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 18:29:39,437 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 104 states have internal predecessors, (209), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-02 18:29:39,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:39,438 INFO L225 Difference]: With dead ends: 214 [2021-05-02 18:29:39,438 INFO L226 Difference]: Without dead ends: 211 [2021-05-02 18:29:39,439 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6036 ImplicationChecksByTransitivity, 13731.5ms TimeCoverageRelationStatistics Valid=15275, Invalid=27781, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 18:29:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-05-02 18:29:39,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2021-05-02 18:29:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.0048780487804878) internal successors, (206), 205 states have internal predecessors, (206), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-05-02 18:29:39,441 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 207 [2021-05-02 18:29:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:39,441 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-05-02 18:29:39,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 104 states have internal predecessors, (209), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-05-02 18:29:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 18:29:39,442 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:39,442 INFO L523 BasicCegarLoop]: trace histogram [99, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:39,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:39,643 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:39,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:39,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1367648504, now seen corresponding path program 99 times [2021-05-02 18:29:39,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:39,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483045170] [2021-05-02 18:29:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:45,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:29:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:29:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:45,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:29:45,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483045170] [2021-05-02 18:29:45,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483045170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:45,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225027] [2021-05-02 18:29:45,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:29:45,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 18:29:45,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:29:45,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1162 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 18:29:45,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:29:45,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:45,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:29:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9801 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:29:46,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225027] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:29:46,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:29:46,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 108 [2021-05-02 18:29:46,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545173281] [2021-05-02 18:29:46,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 18:29:46,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:29:46,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 18:29:46,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5265, Invalid=6291, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 18:29:46,471 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 108 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 105 states have internal predecessors, (211), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:56,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:29:56,060 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-05-02 18:29:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 18:29:56,061 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 105 states have internal predecessors, (211), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-02 18:29:56,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:29:56,062 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:29:56,062 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 18:29:56,065 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6147 ImplicationChecksByTransitivity, 14648.6ms TimeCoverageRelationStatistics Valid=15579, Invalid=28311, Unknown=0, NotChecked=0, Total=43890 [2021-05-02 18:29:56,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 18:29:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-02 18:29:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-05-02 18:29:56,068 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 209 [2021-05-02 18:29:56,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:29:56,068 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-05-02 18:29:56,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 105 states have internal predecessors, (211), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:29:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-05-02 18:29:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:29:56,069 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:29:56,069 INFO L523 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:29:56,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 18:29:56,273 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:29:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:29:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 888820805, now seen corresponding path program 100 times [2021-05-02 18:29:56,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:29:56,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575960685] [2021-05-02 18:29:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:29:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:02,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:02,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:02,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575960685] [2021-05-02 18:30:02,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575960685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:02,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474111347] [2021-05-02 18:30:02,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:02,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:30:02,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:02,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 18:30:02,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:02,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:02,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:03,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474111347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:03,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:03,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 109 [2021-05-02 18:30:03,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912468428] [2021-05-02 18:30:03,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 18:30:03,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:03,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 18:30:03,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5368, Invalid=6404, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 18:30:03,524 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 109 states, 109 states have (on average 1.9541284403669725) internal successors, (213), 106 states have internal predecessors, (213), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:13,524 INFO L93 Difference]: Finished difference Result 218 states and 218 transitions. [2021-05-02 18:30:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 18:30:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 1.9541284403669725) internal successors, (213), 106 states have internal predecessors, (213), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 18:30:13,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:13,526 INFO L225 Difference]: With dead ends: 218 [2021-05-02 18:30:13,526 INFO L226 Difference]: Without dead ends: 215 [2021-05-02 18:30:13,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6259 ImplicationChecksByTransitivity, 15607.7ms TimeCoverageRelationStatistics Valid=15886, Invalid=28846, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 18:30:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-05-02 18:30:13,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-05-02 18:30:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.0047846889952152) internal successors, (210), 209 states have internal predecessors, (210), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2021-05-02 18:30:13,529 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 211 [2021-05-02 18:30:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:13,530 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2021-05-02 18:30:13,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 1.9541284403669725) internal successors, (213), 106 states have internal predecessors, (213), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2021-05-02 18:30:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:30:13,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:13,530 INFO L523 BasicCegarLoop]: trace histogram [101, 101, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:13,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 18:30:13,732 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:13,733 INFO L82 PathProgramCache]: Analyzing trace with hash 397342274, now seen corresponding path program 101 times [2021-05-02 18:30:13,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:13,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875104957] [2021-05-02 18:30:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:20,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:20,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:20,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875104957] [2021-05-02 18:30:20,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875104957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:20,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610676016] [2021-05-02 18:30:20,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:20,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2021-05-02 18:30:20,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:20,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 18:30:20,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:20,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:20,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 0 proven. 10201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:21,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610676016] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:21,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:21,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 110 [2021-05-02 18:30:21,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764625074] [2021-05-02 18:30:21,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-02 18:30:21,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:21,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-02 18:30:21,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5472, Invalid=6518, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:30:21,503 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand has 110 states, 110 states have (on average 1.9545454545454546) internal successors, (215), 107 states have internal predecessors, (215), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:31,517 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2021-05-02 18:30:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:30:31,518 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 1.9545454545454546) internal successors, (215), 107 states have internal predecessors, (215), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 18:30:31,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:31,518 INFO L225 Difference]: With dead ends: 220 [2021-05-02 18:30:31,518 INFO L226 Difference]: Without dead ends: 217 [2021-05-02 18:30:31,520 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6372 ImplicationChecksByTransitivity, 15962.3ms TimeCoverageRelationStatistics Valid=16196, Invalid=29386, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 18:30:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-02 18:30:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2021-05-02 18:30:31,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.004739336492891) internal successors, (212), 211 states have internal predecessors, (212), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2021-05-02 18:30:31,523 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 213 [2021-05-02 18:30:31,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:31,523 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2021-05-02 18:30:31,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 110 states, 110 states have (on average 1.9545454545454546) internal successors, (215), 107 states have internal predecessors, (215), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2021-05-02 18:30:31,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:30:31,524 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:31,524 INFO L523 BasicCegarLoop]: trace histogram [102, 102, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:31,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-02 18:30:31,729 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash 532876543, now seen corresponding path program 102 times [2021-05-02 18:30:31,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:31,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022095222] [2021-05-02 18:30:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:38,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:38,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022095222] [2021-05-02 18:30:38,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022095222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:38,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303379370] [2021-05-02 18:30:38,811 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:39,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:30:39,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:30:39,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 18:30:39,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:39,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:39,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:40,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303379370] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:40,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:40,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 111 [2021-05-02 18:30:40,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908783679] [2021-05-02 18:30:40,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:30:40,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:40,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:30:40,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5577, Invalid=6633, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:30:40,112 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand has 111 states, 111 states have (on average 1.954954954954955) internal successors, (217), 108 states have internal predecessors, (217), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:50,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:30:50,685 INFO L93 Difference]: Finished difference Result 222 states and 222 transitions. [2021-05-02 18:30:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 18:30:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 1.954954954954955) internal successors, (217), 108 states have internal predecessors, (217), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 215 [2021-05-02 18:30:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:30:50,687 INFO L225 Difference]: With dead ends: 222 [2021-05-02 18:30:50,687 INFO L226 Difference]: Without dead ends: 219 [2021-05-02 18:30:50,689 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6486 ImplicationChecksByTransitivity, 16940.4ms TimeCoverageRelationStatistics Valid=16509, Invalid=29931, Unknown=0, NotChecked=0, Total=46440 [2021-05-02 18:30:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-05-02 18:30:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2021-05-02 18:30:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 213 states have (on average 1.0046948356807512) internal successors, (214), 213 states have internal predecessors, (214), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-05-02 18:30:50,692 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 215 [2021-05-02 18:30:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:30:50,692 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-05-02 18:30:50,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 1.954954954954955) internal successors, (217), 108 states have internal predecessors, (217), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:30:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-05-02 18:30:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 18:30:50,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:30:50,693 INFO L523 BasicCegarLoop]: trace histogram [103, 103, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:30:50,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 18:30:50,897 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:30:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:30:50,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1932290172, now seen corresponding path program 103 times [2021-05-02 18:30:50,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:30:50,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660883895] [2021-05-02 18:30:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:30:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:57,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:30:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:57,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:30:57,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660883895] [2021-05-02 18:30:57,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660883895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:57,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414624177] [2021-05-02 18:30:57,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:30:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:30:57,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-02 18:30:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:30:57,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:57,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:30:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10609 backedges. 0 proven. 10609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:30:58,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414624177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:30:58,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:30:58,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108] total 112 [2021-05-02 18:30:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624056161] [2021-05-02 18:30:58,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 18:30:58,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:30:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 18:30:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5683, Invalid=6749, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:30:58,800 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 109 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:09,567 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2021-05-02 18:31:09,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-02 18:31:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 109 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 18:31:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:09,569 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:31:09,569 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 18:31:09,572 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6601 ImplicationChecksByTransitivity, 16906.5ms TimeCoverageRelationStatistics Valid=16825, Invalid=30481, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 18:31:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 18:31:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-05-02 18:31:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.0046511627906978) internal successors, (216), 215 states have internal predecessors, (216), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2021-05-02 18:31:09,574 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 217 [2021-05-02 18:31:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:09,574 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2021-05-02 18:31:09,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 1.9553571428571428) internal successors, (219), 109 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2021-05-02 18:31:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 18:31:09,575 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:09,575 INFO L523 BasicCegarLoop]: trace histogram [104, 104, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:09,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 18:31:09,777 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:09,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:09,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1850943303, now seen corresponding path program 104 times [2021-05-02 18:31:09,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:09,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500463467] [2021-05-02 18:31:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:16,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:16,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500463467] [2021-05-02 18:31:16,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500463467] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:16,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643410360] [2021-05-02 18:31:16,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:16,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:31:16,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:16,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 18:31:16,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:17,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:17,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643410360] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:17,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:17,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 113 [2021-05-02 18:31:17,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661880739] [2021-05-02 18:31:17,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 18:31:17,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:17,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 18:31:17,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5790, Invalid=6866, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 18:31:17,928 INFO L87 Difference]: Start difference. First operand 220 states and 220 transitions. Second operand has 113 states, 113 states have (on average 1.9557522123893805) internal successors, (221), 110 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:28,996 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2021-05-02 18:31:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 18:31:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.9557522123893805) internal successors, (221), 110 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-02 18:31:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:28,998 INFO L225 Difference]: With dead ends: 226 [2021-05-02 18:31:28,998 INFO L226 Difference]: Without dead ends: 223 [2021-05-02 18:31:29,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6717 ImplicationChecksByTransitivity, 17339.9ms TimeCoverageRelationStatistics Valid=17144, Invalid=31036, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 18:31:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-05-02 18:31:29,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-05-02 18:31:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.0046082949308757) internal successors, (218), 217 states have internal predecessors, (218), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-05-02 18:31:29,002 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 219 [2021-05-02 18:31:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:29,003 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-05-02 18:31:29,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 113 states have (on average 1.9557522123893805) internal successors, (221), 110 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:29,003 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-05-02 18:31:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:31:29,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:29,004 INFO L523 BasicCegarLoop]: trace histogram [105, 105, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:29,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 18:31:29,228 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash 298986934, now seen corresponding path program 105 times [2021-05-02 18:31:29,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:29,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854729869] [2021-05-02 18:31:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:36,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:36,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854729869] [2021-05-02 18:31:36,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854729869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:36,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873389372] [2021-05-02 18:31:36,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:36,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2021-05-02 18:31:36,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:36,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-02 18:31:36,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:36,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:36,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 0 proven. 11025 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:37,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873389372] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:37,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:37,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 114 [2021-05-02 18:31:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982026930] [2021-05-02 18:31:37,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 18:31:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 18:31:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5898, Invalid=6984, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 18:31:37,646 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 114 states, 114 states have (on average 1.956140350877193) internal successors, (223), 111 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:50,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:31:50,263 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-05-02 18:31:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:31:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.956140350877193) internal successors, (223), 111 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-02 18:31:50,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:31:50,264 INFO L225 Difference]: With dead ends: 228 [2021-05-02 18:31:50,264 INFO L226 Difference]: Without dead ends: 225 [2021-05-02 18:31:50,267 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6834 ImplicationChecksByTransitivity, 18921.6ms TimeCoverageRelationStatistics Valid=17466, Invalid=31596, Unknown=0, NotChecked=0, Total=49062 [2021-05-02 18:31:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-05-02 18:31:50,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2021-05-02 18:31:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.004566210045662) internal successors, (220), 219 states have internal predecessors, (220), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2021-05-02 18:31:50,268 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 221 [2021-05-02 18:31:50,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:31:50,269 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2021-05-02 18:31:50,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 1.956140350877193) internal successors, (223), 111 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:31:50,269 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2021-05-02 18:31:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:31:50,269 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:31:50,269 INFO L523 BasicCegarLoop]: trace histogram [106, 106, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:31:50,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-02 18:31:50,471 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:31:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:31:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash 502675315, now seen corresponding path program 106 times [2021-05-02 18:31:50,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:31:50,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094800817] [2021-05-02 18:31:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:31:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:58,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:31:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:31:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:58,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:31:58,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094800817] [2021-05-02 18:31:58,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094800817] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:58,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133212555] [2021-05-02 18:31:58,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:31:58,674 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:31:58,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:31:58,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 110 conjunts are in the unsatisfiable core [2021-05-02 18:31:58,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:31:58,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:58,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:31:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:31:59,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133212555] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:31:59,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:31:59,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111] total 115 [2021-05-02 18:31:59,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462728336] [2021-05-02 18:31:59,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:31:59,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:31:59,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:31:59,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6007, Invalid=7103, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:31:59,601 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand has 115 states, 115 states have (on average 1.9565217391304348) internal successors, (225), 112 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:11,502 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2021-05-02 18:32:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-02 18:32:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 1.9565217391304348) internal successors, (225), 112 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-02 18:32:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:11,504 INFO L225 Difference]: With dead ends: 230 [2021-05-02 18:32:11,504 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 18:32:11,506 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 19250.9ms TimeCoverageRelationStatistics Valid=17791, Invalid=32161, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 18:32:11,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 18:32:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 226. [2021-05-02 18:32:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 221 states have (on average 1.004524886877828) internal successors, (222), 221 states have internal predecessors, (222), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2021-05-02 18:32:11,508 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 223 [2021-05-02 18:32:11,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:11,508 INFO L480 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2021-05-02 18:32:11,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 1.9565217391304348) internal successors, (225), 112 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:11,508 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2021-05-02 18:32:11,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 18:32:11,509 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:11,509 INFO L523 BasicCegarLoop]: trace histogram [107, 107, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:11,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:11,710 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:11,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1321286160, now seen corresponding path program 107 times [2021-05-02 18:32:11,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:11,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742882529] [2021-05-02 18:32:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:19,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:19,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742882529] [2021-05-02 18:32:19,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742882529] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:19,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398597315] [2021-05-02 18:32:19,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:19,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2021-05-02 18:32:19,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:19,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-02 18:32:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:20,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:20,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11449 backedges. 0 proven. 11449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:21,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398597315] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:21,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:21,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 116 [2021-05-02 18:32:21,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510462120] [2021-05-02 18:32:21,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 18:32:21,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:21,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 18:32:21,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6117, Invalid=7223, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:32:21,041 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand has 116 states, 116 states have (on average 1.956896551724138) internal successors, (227), 113 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:33,414 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2021-05-02 18:32:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 18:32:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 1.956896551724138) internal successors, (227), 113 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-02 18:32:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:33,415 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:32:33,415 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 18:32:33,417 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 19511.7ms TimeCoverageRelationStatistics Valid=18119, Invalid=32731, Unknown=0, NotChecked=0, Total=50850 [2021-05-02 18:32:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 18:32:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-05-02 18:32:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.0044843049327354) internal successors, (224), 223 states have internal predecessors, (224), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2021-05-02 18:32:33,419 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 225 [2021-05-02 18:32:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:33,419 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2021-05-02 18:32:33,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 1.956896551724138) internal successors, (227), 113 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2021-05-02 18:32:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 18:32:33,420 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:33,420 INFO L523 BasicCegarLoop]: trace histogram [108, 108, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:33,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-05-02 18:32:33,621 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:33,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:33,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1801606867, now seen corresponding path program 108 times [2021-05-02 18:32:33,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:33,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218842081] [2021-05-02 18:32:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:42,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:32:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:32:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:42,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:32:42,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218842081] [2021-05-02 18:32:42,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218842081] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:42,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024759036] [2021-05-02 18:32:42,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:42,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2021-05-02 18:32:42,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:32:42,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 115 conjunts are in the unsatisfiable core [2021-05-02 18:32:42,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:32:42,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:42,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:32:43,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:32:43,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024759036] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:32:43,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:32:43,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 113] total 117 [2021-05-02 18:32:43,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672245285] [2021-05-02 18:32:43,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 117 states [2021-05-02 18:32:43,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:32:43,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-05-02 18:32:43,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6228, Invalid=7344, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 18:32:43,470 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand has 117 states, 117 states have (on average 1.9572649572649572) internal successors, (229), 114 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:32:56,082 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2021-05-02 18:32:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-05-02 18:32:56,083 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.9572649572649572) internal successors, (229), 114 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-02 18:32:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:32:56,084 INFO L225 Difference]: With dead ends: 234 [2021-05-02 18:32:56,084 INFO L226 Difference]: Without dead ends: 231 [2021-05-02 18:32:56,087 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7191 ImplicationChecksByTransitivity, 20260.5ms TimeCoverageRelationStatistics Valid=18450, Invalid=33306, Unknown=0, NotChecked=0, Total=51756 [2021-05-02 18:32:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-05-02 18:32:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2021-05-02 18:32:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.0044444444444445) internal successors, (226), 225 states have internal predecessors, (226), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-05-02 18:32:56,090 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 227 [2021-05-02 18:32:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:32:56,090 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-05-02 18:32:56,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 117 states, 117 states have (on average 1.9572649572649572) internal successors, (229), 114 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:32:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-05-02 18:32:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:32:56,091 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:32:56,091 INFO L523 BasicCegarLoop]: trace histogram [109, 109, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:32:56,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:32:56,313 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:32:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:32:56,313 INFO L82 PathProgramCache]: Analyzing trace with hash 466661674, now seen corresponding path program 109 times [2021-05-02 18:32:56,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:32:56,313 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383771872] [2021-05-02 18:32:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:32:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:05,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:05,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383771872] [2021-05-02 18:33:05,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383771872] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:05,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817923789] [2021-05-02 18:33:05,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 116 conjunts are in the unsatisfiable core [2021-05-02 18:33:05,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 0 proven. 11881 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:06,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817923789] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:06,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:06,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114] total 118 [2021-05-02 18:33:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153659882] [2021-05-02 18:33:06,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-02 18:33:06,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:06,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-02 18:33:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6340, Invalid=7466, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:33:06,541 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 118 states, 118 states have (on average 1.9576271186440677) internal successors, (231), 115 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:33:20,204 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2021-05-02 18:33:20,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:33:20,205 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 1.9576271186440677) internal successors, (231), 115 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 18:33:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:33:20,206 INFO L225 Difference]: With dead ends: 236 [2021-05-02 18:33:20,206 INFO L226 Difference]: Without dead ends: 233 [2021-05-02 18:33:20,208 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7312 ImplicationChecksByTransitivity, 21654.6ms TimeCoverageRelationStatistics Valid=18784, Invalid=33886, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 18:33:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-05-02 18:33:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-05-02 18:33:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.0044052863436124) internal successors, (228), 227 states have internal predecessors, (228), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-05-02 18:33:20,210 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 229 [2021-05-02 18:33:20,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:33:20,210 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-05-02 18:33:20,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 1.9576271186440677) internal successors, (231), 115 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:33:20,210 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-05-02 18:33:20,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:33:20,211 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:33:20,211 INFO L523 BasicCegarLoop]: trace histogram [110, 110, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:33:20,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2021-05-02 18:33:20,412 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:33:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:33:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1570656793, now seen corresponding path program 110 times [2021-05-02 18:33:20,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:33:20,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129153803] [2021-05-02 18:33:20,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:33:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:29,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:33:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:33:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:29,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:33:29,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129153803] [2021-05-02 18:33:29,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129153803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:29,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564531610] [2021-05-02 18:33:29,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:33:29,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:33:29,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:33:29,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-02 18:33:29,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:33:29,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:29,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:30,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:33:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:33:31,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564531610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:33:31,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:33:31,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 115] total 119 [2021-05-02 18:33:31,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720559437] [2021-05-02 18:33:31,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:33:31,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:33:31,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:33:31,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6453, Invalid=7589, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:33:31,075 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 119 states, 119 states have (on average 1.9579831932773109) internal successors, (233), 116 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)