/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/loops-crafted-1/mono-crafted_9.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:51:55,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:51:55,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:51:55,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:51:55,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:51:55,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:51:55,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:51:55,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:51:55,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:51:55,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:51:55,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:51:55,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:51:55,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:51:55,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:51:55,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:51:55,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:51:55,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:51:55,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:51:55,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:51:55,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:51:55,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:51:55,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:51:55,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:51:55,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:51:55,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:51:55,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:51:55,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:51:55,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:51:55,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:51:55,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:51:55,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:51:55,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:51:55,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:51:55,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:51:55,660 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:51:55,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:51:55,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:51:55,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:51:55,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:51:55,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:51:55,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:51:55,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:51:56,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:51:56,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:51:56,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:51:56,008 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:51:56,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c [2021-05-02 18:51:56,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e39a39e/045b6f261a73435985d491743b2fed5d/FLAGae2ae6888 [2021-05-02 18:51:56,424 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:51:56,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c [2021-05-02 18:51:56,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e39a39e/045b6f261a73435985d491743b2fed5d/FLAGae2ae6888 [2021-05-02 18:51:56,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25e39a39e/045b6f261a73435985d491743b2fed5d [2021-05-02 18:51:56,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:51:56,448 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:51:56,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:51:56,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:51:56,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:51:56,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c106d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56, skipping insertion in model container [2021-05-02 18:51:56,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:51:56,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:51:56,565 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c[318,331] [2021-05-02 18:51:56,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:51:56,579 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:51:56,603 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_9.c[318,331] [2021-05-02 18:51:56,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:51:56,625 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:51:56,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56 WrapperNode [2021-05-02 18:51:56,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:51:56,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:51:56,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:51:56,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:51:56,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:51:56,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:51:56,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:51:56,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:51:56,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (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 18:51:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:51:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:51:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:51:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:51:56,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:51:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:51:56,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:51:56,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:51:56,865 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:51:56,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:56 BoogieIcfgContainer [2021-05-02 18:51:56,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:51:56,866 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:51:56,867 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:51:56,867 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:51:56,869 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:56" (1/1) ... [2021-05-02 18:51:56,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:51:56 BasicIcfg [2021-05-02 18:51:56,880 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:51:56,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:51:56,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:51:56,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:51:56,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:51:56" (1/4) ... [2021-05-02 18:51:56,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b25a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:51:56, skipping insertion in model container [2021-05-02 18:51:56,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:51:56" (2/4) ... [2021-05-02 18:51:56,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b25a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:51:56, skipping insertion in model container [2021-05-02 18:51:56,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:51:56" (3/4) ... [2021-05-02 18:51:56,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b25a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:51:56, skipping insertion in model container [2021-05-02 18:51:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:51:56" (4/4) ... [2021-05-02 18:51:56,886 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_9.cJordan [2021-05-02 18:51:56,889 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:51:56,892 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:51:56,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:51:56,920 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:51:56,920 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:51:56,920 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:51:56,920 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:51:56,920 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:51:56,920 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:51:56,920 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:51:56,920 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:51:56,929 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 18:51:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:51:56,934 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:56,934 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:56,935 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash -154368955, now seen corresponding path program 1 times [2021-05-02 18:51:56,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:56,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011134429] [2021-05-02 18:51:56,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,125 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 18:51:57,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:57,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011134429] [2021-05-02 18:51:57,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011134429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:57,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:57,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:51:57,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133710050] [2021-05-02 18:51:57,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:51:57,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:57,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:51:57,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:51:57,145 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 18:51:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:57,192 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:51:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:51:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 18:51:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:57,199 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:51:57,199 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 18:51:57,200 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:51:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 18:51:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 18:51:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 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 18:51:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-05-02 18:51:57,220 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-05-02 18:51:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:57,221 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-05-02 18:51:57,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 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 18:51:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-05-02 18:51:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:51:57,221 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:57,222 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:57,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:51:57,222 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash -153445434, now seen corresponding path program 1 times [2021-05-02 18:51:57,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:57,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095060854] [2021-05-02 18:51:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,306 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 18:51:57,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:57,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095060854] [2021-05-02 18:51:57,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095060854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:57,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:57,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:51:57,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502710368] [2021-05-02 18:51:57,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:51:57,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:57,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:51:57,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:51:57,309 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. 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 18:51:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:57,383 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-05-02 18:51:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:51:57,384 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 18:51:57,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:57,385 INFO L225 Difference]: With dead ends: 15 [2021-05-02 18:51:57,385 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:51:57,386 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:51:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:51:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:51:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 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 18:51:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 18:51:57,391 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-02 18:51:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:57,392 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 18:51:57,392 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 18:51:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 18:51:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:51:57,393 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:57,393 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:57,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:51:57,394 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:57,395 INFO L82 PathProgramCache]: Analyzing trace with hash -521762940, now seen corresponding path program 1 times [2021-05-02 18:51:57,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:57,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581720323] [2021-05-02 18:51:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,503 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 18:51:57,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:57,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581720323] [2021-05-02 18:51:57,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581720323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:57,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125265086] [2021-05-02 18:51:57,506 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 18:51:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:51:57,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:57,639 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 18:51:57,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125265086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:57,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:57,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-05-02 18:51:57,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053471674] [2021-05-02 18:51:57,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:51:57,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:51:57,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:51:57,643 INFO L87 Difference]: Start difference. First operand 15 states and 16 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 18:51:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:57,740 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-05-02 18:51:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:51:57,741 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 18:51:57,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:57,742 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:51:57,742 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:51:57,743 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:51:57,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:51:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:51:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 18:51:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 18:51:57,747 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-02 18:51:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:57,747 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 18:51:57,747 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 18:51:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 18:51:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:51:57,748 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:57,748 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:57,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:51:57,961 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2007399362, now seen corresponding path program 2 times [2021-05-02 18:51:57,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:57,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081720910] [2021-05-02 18:51:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:57,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 18:51:58,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:58,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081720910] [2021-05-02 18:51:58,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081720910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:51:58,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:51:58,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:51:58,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223487412] [2021-05-02 18:51:58,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:51:58,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:58,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:51:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:51:58,012 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 18:51:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:58,056 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:51:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:51:58,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 15 [2021-05-02 18:51:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:58,059 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:51:58,059 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 18:51:58,059 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:51:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 18:51:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 18:51:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 18:51:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 18:51:58,063 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-02 18:51:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:58,064 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 18:51:58,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 18:51:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 18:51:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 18:51:58,065 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:58,065 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:58,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 18:51:58,065 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1609511199, now seen corresponding path program 1 times [2021-05-02 18:51:58,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:58,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419104338] [2021-05-02 18:51:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:58,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:58,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419104338] [2021-05-02 18:51:58,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419104338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:58,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914656938] [2021-05-02 18:51:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 18:51:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:51:58,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:58,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:58,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914656938] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:58,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:58,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2021-05-02 18:51:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820031292] [2021-05-02 18:51:58,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 18:51:58,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:58,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 18:51:58,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-02 18:51:58,260 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 18:51:58,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:58,361 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:51:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:51:58,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-05-02 18:51:58,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:58,365 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:51:58,366 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 18:51:58,366 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 18:51:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 18:51:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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 18:51:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-02 18:51:58,370 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-05-02 18:51:58,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:58,371 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-02 18:51:58,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 18:51:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-02 18:51:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 18:51:58,373 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:58,373 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:58,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:58,591 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:58,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:58,592 INFO L82 PathProgramCache]: Analyzing trace with hash -251734435, now seen corresponding path program 2 times [2021-05-02 18:51:58,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:58,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255643646] [2021-05-02 18:51:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:58,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:58,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255643646] [2021-05-02 18:51:58,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255643646] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:58,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281900817] [2021-05-02 18:51:58,654 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 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 18:51:58,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:51:58,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:58,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:51:58,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:58,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:58,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:58,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281900817] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:58,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:58,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 18:51:58,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410923280] [2021-05-02 18:51:58,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 18:51:58,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:58,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 18:51:58,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-02 18:51:58,741 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 18:51:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:58,885 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-05-02 18:51:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 18:51:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2021-05-02 18:51:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:58,885 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:51:58,886 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:51:58,886 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-05-02 18:51:58,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:51:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-02 18:51:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 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 18:51:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-02 18:51:58,888 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2021-05-02 18:51:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:58,888 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-02 18:51:58,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 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 18:51:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-02 18:51:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 18:51:58,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:58,889 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:59,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:59,099 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2092573723, now seen corresponding path program 3 times [2021-05-02 18:51:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:59,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733575679] [2021-05-02 18:51:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:51:59,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:59,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733575679] [2021-05-02 18:51:59,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733575679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011736812] [2021-05-02 18:51:59,164 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 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 18:51:59,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 18:51:59,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:59,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:51:59,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-02 18:51:59,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011736812] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:59,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2021-05-02 18:51:59,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025908868] [2021-05-02 18:51:59,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:51:59,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:59,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:51:59,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:59,271 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 18:51:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:51:59,501 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-02 18:51:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:51:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 21 [2021-05-02 18:51:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:51:59,503 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:51:59,503 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 18:51:59,504 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2021-05-02 18:51:59,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 18:51:59,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-02 18:51:59,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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 18:51:59,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-05-02 18:51:59,506 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2021-05-02 18:51:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:51:59,506 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-05-02 18:51:59,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 18:51:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-05-02 18:51:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 18:51:59,507 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:51:59,507 INFO L523 BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:51:59,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:51:59,713 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:51:59,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:51:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash -327391754, now seen corresponding path program 4 times [2021-05-02 18:51:59,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:51:59,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614603784] [2021-05-02 18:51:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:51:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:51:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:51:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:59,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:51:59,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614603784] [2021-05-02 18:51:59,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614603784] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968620889] [2021-05-02 18:51:59,770 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 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 18:51:59,801 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:51:59,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:51:59,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:51:59,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:51:59,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:51:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:51:59,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968620889] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:51:59,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:51:59,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 18:51:59,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022152308] [2021-05-02 18:51:59,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 18:51:59,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:51:59,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 18:51:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-02 18:51:59,869 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 18:52:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:00,060 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-05-02 18:52:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 18:52:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 25 [2021-05-02 18:52:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:00,061 INFO L225 Difference]: With dead ends: 28 [2021-05-02 18:52:00,061 INFO L226 Difference]: Without dead ends: 28 [2021-05-02 18:52:00,061 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 182.1ms TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:52:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-02 18:52:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-05-02 18:52:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 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 18:52:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-05-02 18:52:00,063 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 25 [2021-05-02 18:52:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:00,063 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-05-02 18:52:00,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 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 18:52:00,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-05-02 18:52:00,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 18:52:00,064 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:00,064 INFO L523 BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:00,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:00,279 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:00,280 INFO L82 PathProgramCache]: Analyzing trace with hash 44690740, now seen corresponding path program 5 times [2021-05-02 18:52:00,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:00,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961614547] [2021-05-02 18:52:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:00,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:00,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961614547] [2021-05-02 18:52:00,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961614547] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:00,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634362844] [2021-05-02 18:52:00,361 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 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 18:52:00,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-05-02 18:52:00,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:00,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:52:00,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:00,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:00,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634362844] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:00,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:00,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11 [2021-05-02 18:52:00,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863500520] [2021-05-02 18:52:00,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 18:52:00,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 18:52:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-02 18:52:00,469 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 18:52:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:00,668 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-05-02 18:52:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 18:52:00,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 27 [2021-05-02 18:52:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:00,669 INFO L225 Difference]: With dead ends: 30 [2021-05-02 18:52:00,669 INFO L226 Difference]: Without dead ends: 30 [2021-05-02 18:52:00,669 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 194.9ms TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:52:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-02 18:52:00,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-05-02 18:52:00,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 25 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 18:52:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-05-02 18:52:00,671 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 27 [2021-05-02 18:52:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:00,671 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-05-02 18:52:00,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 18:52:00,671 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-05-02 18:52:00,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 18:52:00,672 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:00,672 INFO L523 BasicCegarLoop]: trace histogram [9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:00,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:00,885 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:00,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1133681906, now seen corresponding path program 6 times [2021-05-02 18:52:00,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:00,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057263946] [2021-05-02 18:52:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:00,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:00,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057263946] [2021-05-02 18:52:00,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057263946] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:00,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747337255] [2021-05-02 18:52:00,969 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 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 18:52:01,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-05-02 18:52:01,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:01,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:52:01,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:01,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,121 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 18:52:01,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747337255] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:01,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:01,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2021-05-02 18:52:01,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408299946] [2021-05-02 18:52:01,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:52:01,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:01,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:52:01,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:52:01,122 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 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 18:52:01,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:01,392 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-05-02 18:52:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 18:52:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 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 29 [2021-05-02 18:52:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:01,393 INFO L225 Difference]: With dead ends: 36 [2021-05-02 18:52:01,393 INFO L226 Difference]: Without dead ends: 36 [2021-05-02 18:52:01,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 269.7ms TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:52:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-02 18:52:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-02 18:52:01,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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 18:52:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-05-02 18:52:01,396 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2021-05-02 18:52:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:01,397 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-05-02 18:52:01,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 13 states have internal predecessors, (33), 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 18:52:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-05-02 18:52:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 18:52:01,397 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:01,397 INFO L523 BasicCegarLoop]: trace histogram [12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:01,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 18:52:01,615 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:01,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1094295764, now seen corresponding path program 7 times [2021-05-02 18:52:01,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:01,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423660483] [2021-05-02 18:52:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:01,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:01,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:01,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423660483] [2021-05-02 18:52:01,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423660483] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:01,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257380624] [2021-05-02 18:52:01,712 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 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 18:52:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:01,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:52:01,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:01,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 33 proven. 110 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:01,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257380624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:01,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:01,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-05-02 18:52:01,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994815062] [2021-05-02 18:52:01,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 18:52:01,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:01,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 18:52:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-05-02 18:52:01,832 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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 18:52:02,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:02,124 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-05-02 18:52:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 18:52:02,125 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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 35 [2021-05-02 18:52:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:02,126 INFO L225 Difference]: With dead ends: 38 [2021-05-02 18:52:02,126 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 18:52:02,127 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 307.4ms TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-05-02 18:52:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 18:52:02,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 18:52:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 33 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 18:52:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-05-02 18:52:02,140 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 35 [2021-05-02 18:52:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:02,140 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-05-02 18:52:02,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 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 18:52:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-05-02 18:52:02,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 18:52:02,141 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:02,141 INFO L523 BasicCegarLoop]: trace histogram [13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:02,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 18:52:02,357 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:02,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:02,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1784312042, now seen corresponding path program 8 times [2021-05-02 18:52:02,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:02,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170528959] [2021-05-02 18:52:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:02,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:02,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170528959] [2021-05-02 18:52:02,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170528959] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:02,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974673462] [2021-05-02 18:52:02,466 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 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 18:52:02,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:02,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:02,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:52:02,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:02,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 36 proven. 132 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:02,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974673462] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:02,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:02,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 18:52:02,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865974486] [2021-05-02 18:52:02,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 18:52:02,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:02,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 18:52:02,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-05-02 18:52:02,594 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 18:52:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:02,950 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-05-02 18:52:02,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 18:52:02,951 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 37 [2021-05-02 18:52:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:02,951 INFO L225 Difference]: With dead ends: 40 [2021-05-02 18:52:02,951 INFO L226 Difference]: Without dead ends: 40 [2021-05-02 18:52:02,952 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 360.5ms TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:52:02,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-02 18:52:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-05-02 18:52:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 35 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 18:52:02,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-05-02 18:52:02,954 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 37 [2021-05-02 18:52:02,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:02,954 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-05-02 18:52:02,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 18:52:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-05-02 18:52:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 18:52:02,955 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:02,955 INFO L523 BasicCegarLoop]: trace histogram [14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:03,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:03,161 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:03,161 INFO L82 PathProgramCache]: Analyzing trace with hash -2127492312, now seen corresponding path program 9 times [2021-05-02 18:52:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:03,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896945458] [2021-05-02 18:52:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:03,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 39 proven. 156 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:52:03,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:03,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896945458] [2021-05-02 18:52:03,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896945458] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:03,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740926419] [2021-05-02 18:52:03,300 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 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 18:52:03,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 18:52:03,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:03,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 18:52:03,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:03,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-05-02 18:52:03,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740926419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:03,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:03,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2021-05-02 18:52:03,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256229370] [2021-05-02 18:52:03,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:52:03,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:03,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:52:03,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:52:03,453 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 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 18:52:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:03,928 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-05-02 18:52:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 18:52:03,928 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 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 39 [2021-05-02 18:52:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:03,929 INFO L225 Difference]: With dead ends: 45 [2021-05-02 18:52:03,929 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 18:52:03,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 523.8ms TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:52:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 18:52:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-02 18:52:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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 18:52:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-05-02 18:52:03,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 39 [2021-05-02 18:52:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:03,931 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-05-02 18:52:03,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 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 18:52:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-05-02 18:52:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 18:52:03,932 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:03,932 INFO L523 BasicCegarLoop]: trace histogram [16, 13, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:04,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:04,141 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1786169923, now seen corresponding path program 10 times [2021-05-02 18:52:04,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:04,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416001139] [2021-05-02 18:52:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:52:04,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:04,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416001139] [2021-05-02 18:52:04,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416001139] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517671062] [2021-05-02 18:52:04,274 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 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 18:52:04,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:04,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:04,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:52:04,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:04,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 182 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:52:04,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517671062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:04,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:04,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 18:52:04,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178950053] [2021-05-02 18:52:04,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 18:52:04,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:04,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 18:52:04,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-05-02 18:52:04,409 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 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 18:52:04,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:04,796 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-02 18:52:04,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 18:52:04,796 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 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 43 [2021-05-02 18:52:04,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:04,797 INFO L225 Difference]: With dead ends: 46 [2021-05-02 18:52:04,797 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 18:52:04,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 399.3ms TimeCoverageRelationStatistics Valid=377, Invalid=615, Unknown=0, NotChecked=0, Total=992 [2021-05-02 18:52:04,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 18:52:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-02 18:52:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 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 18:52:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-05-02 18:52:04,799 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 43 [2021-05-02 18:52:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:04,799 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-05-02 18:52:04,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 17 states have internal predecessors, (41), 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 18:52:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-05-02 18:52:04,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 18:52:04,800 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:04,800 INFO L523 BasicCegarLoop]: trace histogram [17, 14, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:05,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 18:52:05,013 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:05,013 INFO L82 PathProgramCache]: Analyzing trace with hash -667664895, now seen corresponding path program 11 times [2021-05-02 18:52:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:05,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340148125] [2021-05-02 18:52:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:05,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:52:05,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:05,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340148125] [2021-05-02 18:52:05,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340148125] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:05,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850653572] [2021-05-02 18:52:05,162 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 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 18:52:05,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 18:52:05,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:05,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:52:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 75 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:52:05,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850653572] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:05,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:05,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19 [2021-05-02 18:52:05,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113698947] [2021-05-02 18:52:05,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 18:52:05,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:05,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 18:52:05,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-05-02 18:52:05,300 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 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 18:52:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:05,714 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-02 18:52:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 18:52:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 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 45 [2021-05-02 18:52:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:05,715 INFO L225 Difference]: With dead ends: 48 [2021-05-02 18:52:05,715 INFO L226 Difference]: Without dead ends: 48 [2021-05-02 18:52:05,715 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 443.7ms TimeCoverageRelationStatistics Valid=426, Invalid=696, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:52:05,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-02 18:52:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-02 18:52:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 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 18:52:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2021-05-02 18:52:05,717 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 45 [2021-05-02 18:52:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:05,717 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2021-05-02 18:52:05,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 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 18:52:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2021-05-02 18:52:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 18:52:05,718 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:05,718 INFO L523 BasicCegarLoop]: trace histogram [18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:05,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 18:52:05,934 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:05,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash -865879489, now seen corresponding path program 12 times [2021-05-02 18:52:05,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:05,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518479735] [2021-05-02 18:52:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 80 proven. 240 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 18:52:06,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:06,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518479735] [2021-05-02 18:52:06,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518479735] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:06,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619138549] [2021-05-02 18:52:06,097 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 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 18:52:06,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-05-02 18:52:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:06,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:52:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:06,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 105 proven. 9 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-05-02 18:52:06,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619138549] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:06,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:06,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2021-05-02 18:52:06,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038157224] [2021-05-02 18:52:06,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 18:52:06,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:06,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 18:52:06,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-05-02 18:52:06,264 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 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 18:52:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:06,898 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2021-05-02 18:52:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:52:06,898 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 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 47 [2021-05-02 18:52:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:06,899 INFO L225 Difference]: With dead ends: 53 [2021-05-02 18:52:06,899 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 18:52:06,899 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 693.9ms TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:52:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 18:52:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-02 18:52:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 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 18:52:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-05-02 18:52:06,902 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 47 [2021-05-02 18:52:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:06,902 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-05-02 18:52:06,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 22 states have internal predecessors, (53), 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 18:52:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-05-02 18:52:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 18:52:06,903 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:06,903 INFO L523 BasicCegarLoop]: trace histogram [20, 16, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:07,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 18:52:07,109 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1781403238, now seen corresponding path program 13 times [2021-05-02 18:52:07,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:07,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780051347] [2021-05-02 18:52:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:52:07,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:07,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780051347] [2021-05-02 18:52:07,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780051347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:07,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141393910] [2021-05-02 18:52:07,275 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 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 18:52:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:07,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:52:07,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 119 proven. 272 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:52:07,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141393910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:07,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:07,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21 [2021-05-02 18:52:07,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104226868] [2021-05-02 18:52:07,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 18:52:07,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:07,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 18:52:07,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-05-02 18:52:07,421 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 18:52:07,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:07,912 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-05-02 18:52:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 18:52:07,913 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 51 [2021-05-02 18:52:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:07,913 INFO L225 Difference]: With dead ends: 54 [2021-05-02 18:52:07,913 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 18:52:07,914 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 541.3ms TimeCoverageRelationStatistics Valid=533, Invalid=873, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 18:52:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 18:52:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-02 18:52:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 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 18:52:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-05-02 18:52:07,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 51 [2021-05-02 18:52:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:07,916 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-05-02 18:52:07,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 18:52:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-05-02 18:52:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 18:52:07,916 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:07,916 INFO L523 BasicCegarLoop]: trace histogram [21, 17, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:08,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:08,117 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:08,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1086929064, now seen corresponding path program 14 times [2021-05-02 18:52:08,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:08,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939471975] [2021-05-02 18:52:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:08,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:52:08,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:08,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939471975] [2021-05-02 18:52:08,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939471975] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:08,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76404173] [2021-05-02 18:52:08,322 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 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 18:52:08,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:08,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:08,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:52:08,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:08,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 126 proven. 306 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:52:08,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76404173] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:08,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:08,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 18:52:08,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300739694] [2021-05-02 18:52:08,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 18:52:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:08,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 18:52:08,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:52:08,456 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 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 18:52:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:08,950 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-05-02 18:52:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 18:52:08,950 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 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 53 [2021-05-02 18:52:08,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:08,950 INFO L225 Difference]: With dead ends: 56 [2021-05-02 18:52:08,950 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 18:52:08,951 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 564.6ms TimeCoverageRelationStatistics Valid=591, Invalid=969, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:52:08,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 18:52:08,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-02 18:52:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 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 18:52:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-05-02 18:52:08,953 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 53 [2021-05-02 18:52:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:08,953 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-05-02 18:52:08,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 21 states have internal predecessors, (49), 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 18:52:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-05-02 18:52:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 18:52:08,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:08,954 INFO L523 BasicCegarLoop]: trace histogram [22, 18, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:09,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 18:52:09,165 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 582821270, now seen corresponding path program 15 times [2021-05-02 18:52:09,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:09,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298980344] [2021-05-02 18:52:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:09,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 133 proven. 342 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 18:52:09,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:09,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298980344] [2021-05-02 18:52:09,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298980344] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:09,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998687472] [2021-05-02 18:52:09,370 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 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 18:52:09,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 18:52:09,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:09,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 18:52:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:09,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 162 proven. 16 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-05-02 18:52:09,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998687472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:09,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:09,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 7] total 27 [2021-05-02 18:52:09,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409280206] [2021-05-02 18:52:09,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:52:09,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:09,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:52:09,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:52:09,563 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 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 18:52:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:10,305 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-05-02 18:52:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:52:10,312 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 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 55 [2021-05-02 18:52:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:10,313 INFO L225 Difference]: With dead ends: 61 [2021-05-02 18:52:10,313 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 18:52:10,314 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 852.9ms TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:52:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 18:52:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-02 18:52:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 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 18:52:10,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-05-02 18:52:10,317 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 55 [2021-05-02 18:52:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:10,318 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-05-02 18:52:10,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 26 states have internal predecessors, (61), 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 18:52:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-05-02 18:52:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 18:52:10,318 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:10,318 INFO L523 BasicCegarLoop]: trace histogram [24, 19, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:10,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:10,519 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:10,519 INFO L82 PathProgramCache]: Analyzing trace with hash 9684273, now seen corresponding path program 16 times [2021-05-02 18:52:10,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:10,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229457747] [2021-05-02 18:52:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:52:10,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:10,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229457747] [2021-05-02 18:52:10,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229457747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:10,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647683265] [2021-05-02 18:52:10,738 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 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 18:52:10,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:10,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:10,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:52:10,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:10,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 180 proven. 380 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:52:10,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647683265] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:10,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:10,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24 [2021-05-02 18:52:10,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084176806] [2021-05-02 18:52:10,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 18:52:10,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:10,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 18:52:10,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2021-05-02 18:52:10,897 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 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 18:52:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:11,474 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-05-02 18:52:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 18:52:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 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 59 [2021-05-02 18:52:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:11,474 INFO L225 Difference]: With dead ends: 62 [2021-05-02 18:52:11,475 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 18:52:11,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 643.5ms TimeCoverageRelationStatistics Valid=716, Invalid=1176, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 18:52:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 18:52:11,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-02 18:52:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.105263157894737) internal successors, (63), 57 states have internal predecessors, (63), 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 18:52:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-05-02 18:52:11,477 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 59 [2021-05-02 18:52:11,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:11,478 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-05-02 18:52:11,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 23 states have internal predecessors, (53), 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 18:52:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-05-02 18:52:11,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 18:52:11,478 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:11,478 INFO L523 BasicCegarLoop]: trace histogram [25, 20, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:11,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:11,693 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:11,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2128741137, now seen corresponding path program 17 times [2021-05-02 18:52:11,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:11,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894394463] [2021-05-02 18:52:11,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:52:11,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:11,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894394463] [2021-05-02 18:52:11,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894394463] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:11,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188219972] [2021-05-02 18:52:11,948 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 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 18:52:11,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-05-02 18:52:11,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:11,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:52:11,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:12,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 189 proven. 420 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:52:12,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188219972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:12,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:12,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25 [2021-05-02 18:52:12,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677208776] [2021-05-02 18:52:12,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 18:52:12,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 18:52:12,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2021-05-02 18:52:12,102 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 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 18:52:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:12,694 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-05-02 18:52:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 18:52:12,694 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 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 61 [2021-05-02 18:52:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:12,695 INFO L225 Difference]: With dead ends: 64 [2021-05-02 18:52:12,695 INFO L226 Difference]: Without dead ends: 64 [2021-05-02 18:52:12,695 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 707.6ms TimeCoverageRelationStatistics Valid=783, Invalid=1287, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:52:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-02 18:52:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-02 18:52:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 states have internal predecessors, (65), 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 18:52:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2021-05-02 18:52:12,697 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 61 [2021-05-02 18:52:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:12,697 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2021-05-02 18:52:12,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 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 18:52:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2021-05-02 18:52:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 18:52:12,698 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:12,698 INFO L523 BasicCegarLoop]: trace histogram [26, 21, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:12,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 18:52:12,909 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash 133774637, now seen corresponding path program 18 times [2021-05-02 18:52:12,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:12,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955638998] [2021-05-02 18:52:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 198 proven. 462 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 18:52:13,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:13,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955638998] [2021-05-02 18:52:13,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955638998] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:13,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875739121] [2021-05-02 18:52:13,142 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 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 18:52:13,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2021-05-02 18:52:13,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:13,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:52:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 231 proven. 25 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2021-05-02 18:52:13,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875739121] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:13,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:13,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8] total 31 [2021-05-02 18:52:13,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541630249] [2021-05-02 18:52:13,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:52:13,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:13,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:52:13,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:52:13,386 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 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 18:52:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:14,282 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-05-02 18:52:14,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 18:52:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 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 63 [2021-05-02 18:52:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:14,283 INFO L225 Difference]: With dead ends: 69 [2021-05-02 18:52:14,283 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 18:52:14,284 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1043.2ms TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:52:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 18:52:14,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-02 18:52:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.1111111111111112) internal successors, (70), 63 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 18:52:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-05-02 18:52:14,285 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 63 [2021-05-02 18:52:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:14,285 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-05-02 18:52:14,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.225806451612903) internal successors, (69), 30 states have internal predecessors, (69), 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 18:52:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-05-02 18:52:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 18:52:14,286 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:14,286 INFO L523 BasicCegarLoop]: trace histogram [28, 22, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:14,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:14,502 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:14,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1362900232, now seen corresponding path program 19 times [2021-05-02 18:52:14,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:14,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628916644] [2021-05-02 18:52:14,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:52:14,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:14,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628916644] [2021-05-02 18:52:14,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628916644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:14,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495848270] [2021-05-02 18:52:14,756 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 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 18:52:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:14,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:52:14,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:14,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 253 proven. 506 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:52:14,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495848270] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:14,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:14,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27 [2021-05-02 18:52:14,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616256087] [2021-05-02 18:52:14,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 18:52:14,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:14,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 18:52:14,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2021-05-02 18:52:14,917 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 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 18:52:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:15,562 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2021-05-02 18:52:15,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 18:52:15,563 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 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 67 [2021-05-02 18:52:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:15,563 INFO L225 Difference]: With dead ends: 70 [2021-05-02 18:52:15,563 INFO L226 Difference]: Without dead ends: 70 [2021-05-02 18:52:15,564 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 760.0ms TimeCoverageRelationStatistics Valid=926, Invalid=1524, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 18:52:15,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-02 18:52:15,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-02 18:52:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 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 18:52:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-05-02 18:52:15,565 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 67 [2021-05-02 18:52:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:15,565 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-05-02 18:52:15,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 26 states have internal predecessors, (59), 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 18:52:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-05-02 18:52:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 18:52:15,566 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:15,566 INFO L523 BasicCegarLoop]: trace histogram [29, 23, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:15,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 18:52:15,781 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:15,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1718210246, now seen corresponding path program 20 times [2021-05-02 18:52:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:15,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256314136] [2021-05-02 18:52:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:52:16,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:16,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256314136] [2021-05-02 18:52:16,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256314136] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:16,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064111225] [2021-05-02 18:52:16,038 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 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 18:52:16,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:16,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:16,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:52:16,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 264 proven. 552 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:52:16,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064111225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:16,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:16,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 18:52:16,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371674979] [2021-05-02 18:52:16,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 18:52:16,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:16,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 18:52:16,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2021-05-02 18:52:16,183 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 18:52:16,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:16,897 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-05-02 18:52:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 18:52:16,897 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 69 [2021-05-02 18:52:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:16,897 INFO L225 Difference]: With dead ends: 72 [2021-05-02 18:52:16,897 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 18:52:16,898 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 822.3ms TimeCoverageRelationStatistics Valid=1002, Invalid=1650, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:52:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 18:52:16,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-02 18:52:16,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 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 18:52:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2021-05-02 18:52:16,899 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 69 [2021-05-02 18:52:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:16,900 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2021-05-02 18:52:16,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 27 states have internal predecessors, (61), 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 18:52:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2021-05-02 18:52:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 18:52:16,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:16,900 INFO L523 BasicCegarLoop]: trace histogram [30, 24, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:17,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 18:52:17,101 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash -426249980, now seen corresponding path program 21 times [2021-05-02 18:52:17,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:17,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427986824] [2021-05-02 18:52:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:17,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 275 proven. 600 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-05-02 18:52:17,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:17,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427986824] [2021-05-02 18:52:17,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427986824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:17,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461649058] [2021-05-02 18:52:17,402 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 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 18:52:17,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-05-02 18:52:17,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:17,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 18:52:17,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:17,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 312 proven. 36 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-05-02 18:52:17,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461649058] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:17,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:17,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2021-05-02 18:52:17,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337933963] [2021-05-02 18:52:17,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 18:52:17,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 18:52:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 18:52:17,686 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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 18:52:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:18,724 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2021-05-02 18:52:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:52:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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 71 [2021-05-02 18:52:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:18,725 INFO L225 Difference]: With dead ends: 77 [2021-05-02 18:52:18,725 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 18:52:18,726 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1284.7ms TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:52:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 18:52:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-02 18:52:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 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 18:52:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2021-05-02 18:52:18,727 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 71 [2021-05-02 18:52:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:18,727 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2021-05-02 18:52:18,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 states have internal predecessors, (77), 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 18:52:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2021-05-02 18:52:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 18:52:18,728 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:18,728 INFO L523 BasicCegarLoop]: trace histogram [32, 25, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:18,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:18,943 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1947152671, now seen corresponding path program 22 times [2021-05-02 18:52:18,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:18,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332747961] [2021-05-02 18:52:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:52:19,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:19,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332747961] [2021-05-02 18:52:19,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332747961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:19,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403633214] [2021-05-02 18:52:19,226 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 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 18:52:19,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:19,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:19,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:52:19,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:19,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 338 proven. 650 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:52:19,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403633214] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:19,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:19,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30 [2021-05-02 18:52:19,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459650280] [2021-05-02 18:52:19,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 18:52:19,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:19,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 18:52:19,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2021-05-02 18:52:19,395 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 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 18:52:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:20,172 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2021-05-02 18:52:20,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 18:52:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 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 75 [2021-05-02 18:52:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:20,173 INFO L225 Difference]: With dead ends: 78 [2021-05-02 18:52:20,173 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 18:52:20,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 898.8ms TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 18:52:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 18:52:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 18:52:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 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 18:52:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-05-02 18:52:20,175 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 75 [2021-05-02 18:52:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:20,176 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-05-02 18:52:20,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 29 states have internal predecessors, (65), 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 18:52:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-05-02 18:52:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 18:52:20,176 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:20,176 INFO L523 BasicCegarLoop]: trace histogram [33, 26, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:20,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 18:52:20,392 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:20,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:20,392 INFO L82 PathProgramCache]: Analyzing trace with hash -44159779, now seen corresponding path program 23 times [2021-05-02 18:52:20,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:20,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171290632] [2021-05-02 18:52:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:20,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:52:20,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:20,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171290632] [2021-05-02 18:52:20,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171290632] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:20,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167990108] [2021-05-02 18:52:20,710 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 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 18:52:20,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2021-05-02 18:52:20,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:20,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:52:20,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:20,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:20,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:52:20,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167990108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:20,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:20,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31 [2021-05-02 18:52:20,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021866450] [2021-05-02 18:52:20,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 18:52:20,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 18:52:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2021-05-02 18:52:20,923 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 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 18:52:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:21,760 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2021-05-02 18:52:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 18:52:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 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 77 [2021-05-02 18:52:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:21,761 INFO L225 Difference]: With dead ends: 80 [2021-05-02 18:52:21,761 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 18:52:21,762 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 981.1ms TimeCoverageRelationStatistics Valid=1248, Invalid=2058, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:52:21,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 18:52:21,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 18:52:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 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 18:52:21,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2021-05-02 18:52:21,764 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 77 [2021-05-02 18:52:21,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:21,764 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2021-05-02 18:52:21,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.161290322580645) internal successors, (67), 30 states have internal predecessors, (67), 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 18:52:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2021-05-02 18:52:21,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 18:52:21,764 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:21,764 INFO L523 BasicCegarLoop]: trace histogram [34, 27, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:21,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:21,965 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1859989787, now seen corresponding path program 24 times [2021-05-02 18:52:21,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:21,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910197576] [2021-05-02 18:52:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 364 proven. 756 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 18:52:22,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910197576] [2021-05-02 18:52:22,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910197576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:22,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805448430] [2021-05-02 18:52:22,318 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 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 18:52:22,375 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 18:52:22,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:22,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 18:52:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 405 proven. 49 refuted. 0 times theorem prover too weak. 702 trivial. 0 not checked. [2021-05-02 18:52:22,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805448430] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:22,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:22,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 10] total 39 [2021-05-02 18:52:22,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105659762] [2021-05-02 18:52:22,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:52:22,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:52:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:52:22,657 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 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 18:52:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:23,921 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2021-05-02 18:52:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:52:23,922 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 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 79 [2021-05-02 18:52:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:23,922 INFO L225 Difference]: With dead ends: 85 [2021-05-02 18:52:23,922 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 18:52:23,923 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1574.1ms TimeCoverageRelationStatistics Valid=2109, Invalid=3441, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:52:23,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 18:52:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-02 18:52:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.1139240506329113) internal successors, (88), 79 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 18:52:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2021-05-02 18:52:23,925 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 79 [2021-05-02 18:52:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:23,925 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2021-05-02 18:52:23,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 38 states have internal predecessors, (85), 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 18:52:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2021-05-02 18:52:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 18:52:23,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:23,926 INFO L523 BasicCegarLoop]: trace histogram [36, 28, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:24,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 18:52:24,133 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash 974432630, now seen corresponding path program 25 times [2021-05-02 18:52:24,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:24,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121324243] [2021-05-02 18:52:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:52:24,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:24,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121324243] [2021-05-02 18:52:24,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121324243] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:24,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379970869] [2021-05-02 18:52:24,497 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 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 18:52:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:52:24,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:24,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 435 proven. 812 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:52:24,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379970869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:24,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:24,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33 [2021-05-02 18:52:24,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718960347] [2021-05-02 18:52:24,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 18:52:24,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:24,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 18:52:24,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 18:52:24,674 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 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 18:52:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:25,586 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-05-02 18:52:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 18:52:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 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 83 [2021-05-02 18:52:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:25,587 INFO L225 Difference]: With dead ends: 86 [2021-05-02 18:52:25,587 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 18:52:25,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 1097.8ms TimeCoverageRelationStatistics Valid=1427, Invalid=2355, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 18:52:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 18:52:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 18:52:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 81 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 18:52:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2021-05-02 18:52:25,590 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 83 [2021-05-02 18:52:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:25,590 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2021-05-02 18:52:25,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 32 states have internal predecessors, (71), 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 18:52:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2021-05-02 18:52:25,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 18:52:25,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:25,591 INFO L523 BasicCegarLoop]: trace histogram [37, 29, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:25,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 18:52:25,805 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1190983884, now seen corresponding path program 26 times [2021-05-02 18:52:25,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:25,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996665626] [2021-05-02 18:52:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:26,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:52:26,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:26,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996665626] [2021-05-02 18:52:26,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996665626] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:26,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265590853] [2021-05-02 18:52:26,218 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 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 18:52:26,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:26,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:26,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:52:26,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:26,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1369 backedges. 450 proven. 870 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:52:26,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265590853] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:26,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:26,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 18:52:26,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676069457] [2021-05-02 18:52:26,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 18:52:26,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:26,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 18:52:26,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 18:52:26,423 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 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 18:52:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:27,440 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2021-05-02 18:52:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 18:52:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 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 85 [2021-05-02 18:52:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:27,441 INFO L225 Difference]: With dead ends: 88 [2021-05-02 18:52:27,441 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 18:52:27,442 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1216.7ms TimeCoverageRelationStatistics Valid=1521, Invalid=2511, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:52:27,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 18:52:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 18:52:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.108433734939759) internal successors, (92), 83 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 18:52:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2021-05-02 18:52:27,443 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 85 [2021-05-02 18:52:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:27,443 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2021-05-02 18:52:27,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1470588235294117) internal successors, (73), 33 states have internal predecessors, (73), 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 18:52:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2021-05-02 18:52:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 18:52:27,444 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:27,444 INFO L523 BasicCegarLoop]: trace histogram [38, 30, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:27,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:27,660 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:27,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:27,660 INFO L82 PathProgramCache]: Analyzing trace with hash 902884722, now seen corresponding path program 27 times [2021-05-02 18:52:27,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:27,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805923018] [2021-05-02 18:52:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 465 proven. 930 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 18:52:28,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:28,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805923018] [2021-05-02 18:52:28,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805923018] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:28,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544823538] [2021-05-02 18:52:28,066 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 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 18:52:28,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2021-05-02 18:52:28,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:28,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:52:28,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:28,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 510 proven. 64 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2021-05-02 18:52:28,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544823538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:28,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:28,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 11] total 43 [2021-05-02 18:52:28,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450049579] [2021-05-02 18:52:28,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:52:28,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:28,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:52:28,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:52:28,453 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 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 18:52:29,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:29,920 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-05-02 18:52:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 18:52:29,921 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 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 87 [2021-05-02 18:52:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:29,921 INFO L225 Difference]: With dead ends: 93 [2021-05-02 18:52:29,921 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 18:52:29,922 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1888.4ms TimeCoverageRelationStatistics Valid=2583, Invalid=4223, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:52:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 18:52:29,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-02 18:52:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 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 18:52:29,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-02 18:52:29,924 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 87 [2021-05-02 18:52:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:29,924 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-02 18:52:29,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 42 states have internal predecessors, (93), 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 18:52:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-02 18:52:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 18:52:29,924 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:29,924 INFO L523 BasicCegarLoop]: trace histogram [40, 31, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:30,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:30,129 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:30,129 INFO L82 PathProgramCache]: Analyzing trace with hash 941133325, now seen corresponding path program 28 times [2021-05-02 18:52:30,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:30,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297838722] [2021-05-02 18:52:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:30,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:52:30,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:30,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297838722] [2021-05-02 18:52:30,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297838722] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:30,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65980301] [2021-05-02 18:52:30,552 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 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 18:52:30,603 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:30,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 18:52:30,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:30,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 544 proven. 992 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:52:30,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65980301] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:30,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:30,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 18:52:30,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657971805] [2021-05-02 18:52:30,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 18:52:30,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:30,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 18:52:30,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 18:52:30,758 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 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 18:52:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:31,820 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2021-05-02 18:52:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 18:52:31,827 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 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 91 [2021-05-02 18:52:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:31,827 INFO L225 Difference]: With dead ends: 94 [2021-05-02 18:52:31,827 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 18:52:31,828 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1288.2ms TimeCoverageRelationStatistics Valid=1718, Invalid=2838, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 18:52:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 18:52:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 18:52:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 89 states have internal predecessors, (99), 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 18:52:31,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2021-05-02 18:52:31,830 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 91 [2021-05-02 18:52:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:31,830 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2021-05-02 18:52:31,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.138888888888889) internal successors, (77), 35 states have internal predecessors, (77), 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 18:52:31,831 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2021-05-02 18:52:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 18:52:31,831 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:31,831 INFO L523 BasicCegarLoop]: trace histogram [41, 32, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:32,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-05-02 18:52:32,034 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -802927157, now seen corresponding path program 29 times [2021-05-02 18:52:32,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:32,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456107622] [2021-05-02 18:52:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:52:32,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:32,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456107622] [2021-05-02 18:52:32,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456107622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535343091] [2021-05-02 18:52:32,486 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 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 18:52:32,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:52:32,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:32,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 18:52:32,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:32,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1681 backedges. 561 proven. 1056 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:52:32,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535343091] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:32,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:32,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 37 [2021-05-02 18:52:32,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407969290] [2021-05-02 18:52:32,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 18:52:32,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:32,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 18:52:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 18:52:32,691 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 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 18:52:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:33,781 INFO L93 Difference]: Finished difference Result 96 states and 105 transitions. [2021-05-02 18:52:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 18:52:33,782 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 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 93 [2021-05-02 18:52:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:33,782 INFO L225 Difference]: With dead ends: 96 [2021-05-02 18:52:33,782 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 18:52:33,783 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 1351.0ms TimeCoverageRelationStatistics Valid=1821, Invalid=3009, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:52:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 18:52:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 18:52:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.10989010989011) internal successors, (101), 91 states have internal predecessors, (101), 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 18:52:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2021-05-02 18:52:33,785 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 93 [2021-05-02 18:52:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:33,785 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2021-05-02 18:52:33,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.135135135135135) internal successors, (79), 36 states have internal predecessors, (79), 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 18:52:33,785 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2021-05-02 18:52:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 18:52:33,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:33,785 INFO L523 BasicCegarLoop]: trace histogram [42, 33, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:34,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:34,001 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1807804919, now seen corresponding path program 30 times [2021-05-02 18:52:34,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:34,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302242557] [2021-05-02 18:52:34,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:34,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 578 proven. 1122 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-05-02 18:52:34,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:34,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302242557] [2021-05-02 18:52:34,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302242557] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:34,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602653583] [2021-05-02 18:52:34,474 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 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 18:52:34,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 39 check-sat command(s) [2021-05-02 18:52:34,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 18:52:34,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:34,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 627 proven. 81 refuted. 0 times theorem prover too weak. 1056 trivial. 0 not checked. [2021-05-02 18:52:34,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602653583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:34,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:34,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 47 [2021-05-02 18:52:34,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335232206] [2021-05-02 18:52:34,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 18:52:34,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 18:52:34,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 18:52:34,948 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 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 18:52:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:36,602 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-05-02 18:52:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:52:36,602 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 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 95 [2021-05-02 18:52:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:36,603 INFO L225 Difference]: With dead ends: 101 [2021-05-02 18:52:36,603 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 18:52:36,603 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 2169.5ms TimeCoverageRelationStatistics Valid=3105, Invalid=5085, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:52:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 18:52:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-05-02 18:52:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1157894736842104) internal successors, (106), 95 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 18:52:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2021-05-02 18:52:36,605 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 95 [2021-05-02 18:52:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:36,605 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2021-05-02 18:52:36,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.148936170212766) internal successors, (101), 46 states have internal predecessors, (101), 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 18:52:36,606 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2021-05-02 18:52:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 18:52:36,606 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:36,606 INFO L523 BasicCegarLoop]: trace histogram [44, 34, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:36,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 18:52:36,821 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:36,821 INFO L82 PathProgramCache]: Analyzing trace with hash -441790748, now seen corresponding path program 31 times [2021-05-02 18:52:36,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:36,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030767347] [2021-05-02 18:52:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:52:37,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:37,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030767347] [2021-05-02 18:52:37,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030767347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:37,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723761409] [2021-05-02 18:52:37,330 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 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 18:52:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:37,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 18:52:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:37,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 665 proven. 1190 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:52:37,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723761409] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:37,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:37,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 39 [2021-05-02 18:52:37,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937890324] [2021-05-02 18:52:37,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 18:52:37,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:37,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 18:52:37,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 18:52:37,542 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 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 18:52:38,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:38,743 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2021-05-02 18:52:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 18:52:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 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 99 [2021-05-02 18:52:38,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:38,743 INFO L225 Difference]: With dead ends: 102 [2021-05-02 18:52:38,743 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 18:52:38,744 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1516.7ms TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 18:52:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 18:52:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-05-02 18:52:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.1134020618556701) internal successors, (108), 97 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 18:52:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2021-05-02 18:52:38,746 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 99 [2021-05-02 18:52:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:38,746 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2021-05-02 18:52:38,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.128205128205128) internal successors, (83), 38 states have internal predecessors, (83), 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 18:52:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2021-05-02 18:52:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 18:52:38,746 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:38,746 INFO L523 BasicCegarLoop]: trace histogram [45, 35, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:38,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 18:52:38,962 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1548873890, now seen corresponding path program 32 times [2021-05-02 18:52:38,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:38,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767821096] [2021-05-02 18:52:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:39,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:52:39,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:39,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767821096] [2021-05-02 18:52:39,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767821096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:39,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861381581] [2021-05-02 18:52:39,490 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 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 18:52:39,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:39,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:39,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 18:52:39,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:39,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2025 backedges. 684 proven. 1260 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:52:39,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861381581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:39,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:39,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 18:52:39,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781350516] [2021-05-02 18:52:39,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 18:52:39,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 18:52:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 18:52:39,699 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 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 18:52:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:40,926 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-05-02 18:52:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 18:52:40,926 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 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 101 [2021-05-02 18:52:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:40,927 INFO L225 Difference]: With dead ends: 104 [2021-05-02 18:52:40,927 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 18:52:40,927 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1546.2ms TimeCoverageRelationStatistics Valid=2148, Invalid=3552, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:52:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 18:52:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-05-02 18:52:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 99 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 18:52:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2021-05-02 18:52:40,929 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 101 [2021-05-02 18:52:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:40,929 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2021-05-02 18:52:40,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.125) internal successors, (85), 39 states have internal predecessors, (85), 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 18:52:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2021-05-02 18:52:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 18:52:40,930 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:40,930 INFO L523 BasicCegarLoop]: trace histogram [46, 36, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:41,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 18:52:41,137 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:41,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:41,137 INFO L82 PathProgramCache]: Analyzing trace with hash -977823008, now seen corresponding path program 33 times [2021-05-02 18:52:41,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:41,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734423516] [2021-05-02 18:52:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 703 proven. 1332 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-05-02 18:52:41,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:41,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734423516] [2021-05-02 18:52:41,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734423516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:41,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669949783] [2021-05-02 18:52:41,678 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 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 18:52:41,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 18:52:41,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:41,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 18:52:41,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:41,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:41,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 756 proven. 100 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-05-02 18:52:42,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669949783] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:42,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:42,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 13] total 51 [2021-05-02 18:52:42,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297391881] [2021-05-02 18:52:42,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:52:42,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:52:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:52:42,181 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 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 18:52:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:44,117 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-05-02 18:52:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:52:44,117 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 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 103 [2021-05-02 18:52:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:44,118 INFO L225 Difference]: With dead ends: 109 [2021-05-02 18:52:44,118 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 18:52:44,118 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 2544.9ms TimeCoverageRelationStatistics Valid=3675, Invalid=6027, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:52:44,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 18:52:44,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-05-02 18:52:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.116504854368932) internal successors, (115), 103 states have internal predecessors, (115), 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 18:52:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-05-02 18:52:44,120 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 103 [2021-05-02 18:52:44,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:44,120 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-05-02 18:52:44,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.1372549019607843) internal successors, (109), 50 states have internal predecessors, (109), 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 18:52:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-05-02 18:52:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 18:52:44,121 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:44,121 INFO L523 BasicCegarLoop]: trace histogram [48, 37, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:44,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 18:52:44,329 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:44,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:44,329 INFO L82 PathProgramCache]: Analyzing trace with hash -65053701, now seen corresponding path program 34 times [2021-05-02 18:52:44,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:44,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675624050] [2021-05-02 18:52:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:52:44,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:44,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675624050] [2021-05-02 18:52:44,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675624050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:44,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342064226] [2021-05-02 18:52:44,911 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 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 18:52:44,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:52:44,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:44,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 18:52:44,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:44,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 798 proven. 1406 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:52:45,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342064226] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:45,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:45,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 18:52:45,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576558698] [2021-05-02 18:52:45,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 18:52:45,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:45,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 18:52:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 18:52:45,153 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 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 18:52:46,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:46,475 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-02 18:52:46,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 18:52:46,475 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 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 107 [2021-05-02 18:52:46,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:46,476 INFO L225 Difference]: With dead ends: 110 [2021-05-02 18:52:46,476 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 18:52:46,476 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 1704.3ms TimeCoverageRelationStatistics Valid=2381, Invalid=3939, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 18:52:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 18:52:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-02 18:52:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 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 18:52:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-02 18:52:46,478 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 107 [2021-05-02 18:52:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:46,478 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-02 18:52:46,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.119047619047619) internal successors, (89), 41 states have internal predecessors, (89), 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 18:52:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-02 18:52:46,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 18:52:46,479 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:46,479 INFO L523 BasicCegarLoop]: trace histogram [49, 38, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:46,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 18:52:46,689 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:46,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:46,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1193287751, now seen corresponding path program 35 times [2021-05-02 18:52:46,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:46,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052103606] [2021-05-02 18:52:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:47,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:52:47,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:47,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052103606] [2021-05-02 18:52:47,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052103606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:47,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134761476] [2021-05-02 18:52:47,261 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 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 18:52:47,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 50 check-sat command(s) [2021-05-02 18:52:47,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:47,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 18:52:47,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:47,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:47,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2401 backedges. 819 proven. 1482 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:52:47,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134761476] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:47,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:47,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 43 [2021-05-02 18:52:47,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231739680] [2021-05-02 18:52:47,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 18:52:47,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 18:52:47,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 18:52:47,494 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 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 18:52:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:48,885 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2021-05-02 18:52:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 18:52:48,886 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 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 109 [2021-05-02 18:52:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:48,886 INFO L225 Difference]: With dead ends: 112 [2021-05-02 18:52:48,886 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 18:52:48,887 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1748.1ms TimeCoverageRelationStatistics Valid=2502, Invalid=4140, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:52:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 18:52:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-05-02 18:52:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 107 states have internal predecessors, (119), 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 18:52:48,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2021-05-02 18:52:48,888 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 109 [2021-05-02 18:52:48,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:48,889 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2021-05-02 18:52:48,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.116279069767442) internal successors, (91), 42 states have internal predecessors, (91), 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 18:52:48,889 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2021-05-02 18:52:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 18:52:48,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:48,889 INFO L523 BasicCegarLoop]: trace histogram [50, 39, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:49,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 18:52:49,096 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:49,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:49,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1200516087, now seen corresponding path program 36 times [2021-05-02 18:52:49,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:49,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161549591] [2021-05-02 18:52:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:49,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 840 proven. 1560 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-05-02 18:52:49,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:49,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161549591] [2021-05-02 18:52:49,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161549591] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:49,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559196940] [2021-05-02 18:52:49,720 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 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 18:52:49,791 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2021-05-02 18:52:49,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:49,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 18:52:49,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:49,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:49,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:50,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 897 proven. 121 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2021-05-02 18:52:50,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559196940] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:50,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:50,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 14] total 55 [2021-05-02 18:52:50,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445065086] [2021-05-02 18:52:50,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:52:50,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:50,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:52:50,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:52:50,322 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 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 18:52:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:52,494 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2021-05-02 18:52:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 18:52:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 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 111 [2021-05-02 18:52:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:52,495 INFO L225 Difference]: With dead ends: 117 [2021-05-02 18:52:52,495 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 18:52:52,496 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 2930.4ms TimeCoverageRelationStatistics Valid=4293, Invalid=7049, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:52:52,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 18:52:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2021-05-02 18:52:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.117117117117117) internal successors, (124), 111 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 18:52:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2021-05-02 18:52:52,498 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 111 [2021-05-02 18:52:52,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:52,498 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2021-05-02 18:52:52,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.1272727272727274) internal successors, (117), 54 states have internal predecessors, (117), 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 18:52:52,498 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2021-05-02 18:52:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 18:52:52,498 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:52,498 INFO L523 BasicCegarLoop]: trace histogram [52, 40, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:52,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 18:52:52,709 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:52,709 INFO L82 PathProgramCache]: Analyzing trace with hash 361637202, now seen corresponding path program 37 times [2021-05-02 18:52:52,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:52,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606956532] [2021-05-02 18:52:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:53,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:52:53,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:53,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606956532] [2021-05-02 18:52:53,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606956532] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:53,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730668869] [2021-05-02 18:52:53,377 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 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 18:52:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:53,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 18:52:53,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:53,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 943 proven. 1640 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:52:53,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730668869] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:53,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:53,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 45 [2021-05-02 18:52:53,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096086723] [2021-05-02 18:52:53,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 18:52:53,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:53,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 18:52:53,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 18:52:53,631 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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 18:52:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:55,129 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2021-05-02 18:52:55,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 18:52:55,130 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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 115 [2021-05-02 18:52:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:55,131 INFO L225 Difference]: With dead ends: 118 [2021-05-02 18:52:55,131 INFO L226 Difference]: Without dead ends: 118 [2021-05-02 18:52:55,131 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1931.9ms TimeCoverageRelationStatistics Valid=2753, Invalid=4557, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 18:52:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-02 18:52:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-05-02 18:52:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 113 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 18:52:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2021-05-02 18:52:55,133 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 115 [2021-05-02 18:52:55,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:55,133 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2021-05-02 18:52:55,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.111111111111111) internal successors, (95), 44 states have internal predecessors, (95), 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 18:52:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2021-05-02 18:52:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 18:52:55,134 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:55,134 INFO L523 BasicCegarLoop]: trace histogram [53, 41, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:55,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:55,349 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:55,349 INFO L82 PathProgramCache]: Analyzing trace with hash 568724240, now seen corresponding path program 38 times [2021-05-02 18:52:55,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:55,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207867972] [2021-05-02 18:52:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:52:56,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:56,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207867972] [2021-05-02 18:52:56,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207867972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:56,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801855929] [2021-05-02 18:52:56,030 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 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 18:52:56,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:52:56,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:56,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 18:52:56,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:56,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 966 proven. 1722 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:52:56,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801855929] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:56,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:56,343 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 18:52:56,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611014840] [2021-05-02 18:52:56,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 18:52:56,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:56,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 18:52:56,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 18:52:56,344 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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 18:52:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:57,889 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-05-02 18:52:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 18:52:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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 117 [2021-05-02 18:52:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:57,890 INFO L225 Difference]: With dead ends: 120 [2021-05-02 18:52:57,890 INFO L226 Difference]: Without dead ends: 120 [2021-05-02 18:52:57,891 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2003.2ms TimeCoverageRelationStatistics Valid=2883, Invalid=4773, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:52:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-02 18:52:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-05-02 18:52:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 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 18:52:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2021-05-02 18:52:57,892 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 117 [2021-05-02 18:52:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:57,893 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2021-05-02 18:52:57,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.108695652173913) internal successors, (97), 45 states have internal predecessors, (97), 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 18:52:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2021-05-02 18:52:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 18:52:57,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:57,893 INFO L523 BasicCegarLoop]: trace histogram [54, 42, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:58,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:52:58,108 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2010872142, now seen corresponding path program 39 times [2021-05-02 18:52:58,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:58,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900409428] [2021-05-02 18:52:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 989 proven. 1806 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 18:52:58,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:58,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900409428] [2021-05-02 18:52:58,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900409428] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:58,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587095021] [2021-05-02 18:52:58,930 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 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 18:52:58,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-05-02 18:52:58,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:52:58,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 18:52:58,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:59,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:59,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 1050 proven. 144 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-05-02 18:52:59,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587095021] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:59,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:52:59,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 15] total 59 [2021-05-02 18:52:59,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796778345] [2021-05-02 18:52:59,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 18:52:59,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:59,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 18:52:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 18:52:59,571 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 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 18:53:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:02,002 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-05-02 18:53:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:53:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 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 119 [2021-05-02 18:53:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:02,003 INFO L225 Difference]: With dead ends: 125 [2021-05-02 18:53:02,003 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 18:53:02,003 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 3411.4ms TimeCoverageRelationStatistics Valid=4959, Invalid=8151, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:53:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 18:53:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-05-02 18:53:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 119 states have internal predecessors, (133), 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 18:53:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2021-05-02 18:53:02,005 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 119 [2021-05-02 18:53:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:02,005 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2021-05-02 18:53:02,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.1186440677966103) internal successors, (125), 58 states have internal predecessors, (125), 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 18:53:02,006 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2021-05-02 18:53:02,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 18:53:02,006 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:02,006 INFO L523 BasicCegarLoop]: trace histogram [56, 43, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:02,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:02,218 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1949099287, now seen corresponding path program 40 times [2021-05-02 18:53:02,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:02,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055777668] [2021-05-02 18:53:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:02,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:53:02,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:02,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055777668] [2021-05-02 18:53:02,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055777668] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:02,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539295915] [2021-05-02 18:53:02,966 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 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 18:53:03,023 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:03,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:03,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 18:53:03,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 1100 proven. 1892 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:53:03,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539295915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:03,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:03,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 18:53:03,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606541774] [2021-05-02 18:53:03,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 18:53:03,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:03,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 18:53:03,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 18:53:03,209 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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 18:53:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:04,854 INFO L93 Difference]: Finished difference Result 126 states and 139 transitions. [2021-05-02 18:53:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 18:53:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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 123 [2021-05-02 18:53:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:04,855 INFO L225 Difference]: With dead ends: 126 [2021-05-02 18:53:04,855 INFO L226 Difference]: Without dead ends: 126 [2021-05-02 18:53:04,855 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 2172.8ms TimeCoverageRelationStatistics Valid=3152, Invalid=5220, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:53:04,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-02 18:53:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-05-02 18:53:04,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.115702479338843) internal successors, (135), 121 states have internal predecessors, (135), 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 18:53:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 139 transitions. [2021-05-02 18:53:04,857 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 139 transitions. Word has length 123 [2021-05-02 18:53:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:04,857 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 139 transitions. [2021-05-02 18:53:04,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.1041666666666665) internal successors, (101), 47 states have internal predecessors, (101), 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 18:53:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 139 transitions. [2021-05-02 18:53:04,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 18:53:04,857 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:04,858 INFO L523 BasicCegarLoop]: trace histogram [57, 44, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:05,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 18:53:05,073 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1824496985, now seen corresponding path program 41 times [2021-05-02 18:53:05,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:05,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551752799] [2021-05-02 18:53:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:05,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:53:05,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:05,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551752799] [2021-05-02 18:53:05,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551752799] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:05,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516429821] [2021-05-02 18:53:05,865 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 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 18:53:05,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2021-05-02 18:53:05,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:05,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 18:53:05,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:05,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:05,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 1125 proven. 1980 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:53:06,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516429821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:06,115 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:06,115 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 49 [2021-05-02 18:53:06,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90149120] [2021-05-02 18:53:06,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 18:53:06,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:06,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 18:53:06,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 18:53:06,116 INFO L87 Difference]: Start difference. First operand 126 states and 139 transitions. Second operand has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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 18:53:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:07,799 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-05-02 18:53:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 18:53:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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 125 [2021-05-02 18:53:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:07,800 INFO L225 Difference]: With dead ends: 128 [2021-05-02 18:53:07,800 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 18:53:07,801 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 2262.8ms TimeCoverageRelationStatistics Valid=3291, Invalid=5451, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:53:07,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 18:53:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-05-02 18:53:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.113821138211382) internal successors, (137), 123 states have internal predecessors, (137), 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 18:53:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 141 transitions. [2021-05-02 18:53:07,802 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 141 transitions. Word has length 125 [2021-05-02 18:53:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:07,802 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 141 transitions. [2021-05-02 18:53:07,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.1020408163265305) internal successors, (103), 48 states have internal predecessors, (103), 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 18:53:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 141 transitions. [2021-05-02 18:53:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 18:53:07,803 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:07,803 INFO L523 BasicCegarLoop]: trace histogram [58, 45, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:08,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:08,018 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:08,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:08,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1954198245, now seen corresponding path program 42 times [2021-05-02 18:53:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:08,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817141420] [2021-05-02 18:53:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1150 proven. 2070 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-05-02 18:53:08,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:08,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817141420] [2021-05-02 18:53:08,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817141420] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:08,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145891385] [2021-05-02 18:53:08,867 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 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 18:53:08,945 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 18:53:08,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:08,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 18:53:08,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 1215 proven. 169 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2021-05-02 18:53:09,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145891385] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:09,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:09,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 16] total 63 [2021-05-02 18:53:09,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736027591] [2021-05-02 18:53:09,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:53:09,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:09,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:53:09,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:53:09,654 INFO L87 Difference]: Start difference. First operand 128 states and 141 transitions. Second operand has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 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 18:53:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:12,317 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2021-05-02 18:53:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:53:12,317 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 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 127 [2021-05-02 18:53:12,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:12,318 INFO L225 Difference]: With dead ends: 133 [2021-05-02 18:53:12,318 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 18:53:12,318 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 3760.1ms TimeCoverageRelationStatistics Valid=5673, Invalid=9333, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:53:12,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 18:53:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-05-02 18:53:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.1181102362204725) internal successors, (142), 127 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 18:53:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2021-05-02 18:53:12,320 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 127 [2021-05-02 18:53:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:12,320 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2021-05-02 18:53:12,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.111111111111111) internal successors, (133), 62 states have internal predecessors, (133), 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 18:53:12,320 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2021-05-02 18:53:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 18:53:12,321 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:12,321 INFO L523 BasicCegarLoop]: trace histogram [60, 46, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:12,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:12,536 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:12,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1752290112, now seen corresponding path program 43 times [2021-05-02 18:53:12,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:12,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570617340] [2021-05-02 18:53:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:13,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:13,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:53:13,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:13,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570617340] [2021-05-02 18:53:13,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570617340] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:13,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784327050] [2021-05-02 18:53:13,389 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 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 18:53:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:13,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 18:53:13,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1269 proven. 2162 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:53:13,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784327050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:13,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:13,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 51 [2021-05-02 18:53:13,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784553418] [2021-05-02 18:53:13,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 18:53:13,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:13,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 18:53:13,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 18:53:13,657 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 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 18:53:15,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:15,481 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2021-05-02 18:53:15,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 18:53:15,481 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 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 131 [2021-05-02 18:53:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:15,482 INFO L225 Difference]: With dead ends: 134 [2021-05-02 18:53:15,482 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 18:53:15,482 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 2444.2ms TimeCoverageRelationStatistics Valid=3578, Invalid=5928, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 18:53:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 18:53:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-05-02 18:53:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 129 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 18:53:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 148 transitions. [2021-05-02 18:53:15,484 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 148 transitions. Word has length 131 [2021-05-02 18:53:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:15,484 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 148 transitions. [2021-05-02 18:53:15,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0980392156862746) internal successors, (107), 50 states have internal predecessors, (107), 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 18:53:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 148 transitions. [2021-05-02 18:53:15,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 18:53:15,485 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:15,485 INFO L523 BasicCegarLoop]: trace histogram [61, 47, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:15,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 18:53:15,700 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash -410069378, now seen corresponding path program 44 times [2021-05-02 18:53:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:15,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272854151] [2021-05-02 18:53:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:16,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:53:16,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:16,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272854151] [2021-05-02 18:53:16,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272854151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:16,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668376187] [2021-05-02 18:53:16,621 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 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 18:53:16,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:16,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:16,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 18:53:16,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:16,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3721 backedges. 1296 proven. 2256 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:53:16,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668376187] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:16,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:16,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 18:53:16,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281724312] [2021-05-02 18:53:16,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 18:53:16,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 18:53:16,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 18:53:16,874 INFO L87 Difference]: Start difference. First operand 134 states and 148 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 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 18:53:18,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:18,775 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2021-05-02 18:53:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 18:53:18,775 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 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 133 [2021-05-02 18:53:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:18,776 INFO L225 Difference]: With dead ends: 136 [2021-05-02 18:53:18,776 INFO L226 Difference]: Without dead ends: 136 [2021-05-02 18:53:18,776 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 2558.0ms TimeCoverageRelationStatistics Valid=3726, Invalid=6174, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:53:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-02 18:53:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2021-05-02 18:53:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 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 18:53:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 150 transitions. [2021-05-02 18:53:18,778 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 150 transitions. Word has length 133 [2021-05-02 18:53:18,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:18,778 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 150 transitions. [2021-05-02 18:53:18,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 51 states have internal predecessors, (109), 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 18:53:18,778 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 150 transitions. [2021-05-02 18:53:18,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 18:53:18,779 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:18,779 INFO L523 BasicCegarLoop]: trace histogram [62, 48, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:18,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 18:53:18,979 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash 973867196, now seen corresponding path program 45 times [2021-05-02 18:53:18,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:18,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439124096] [2021-05-02 18:53:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:19,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1323 proven. 2352 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 18:53:19,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:19,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439124096] [2021-05-02 18:53:19,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439124096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:19,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389997806] [2021-05-02 18:53:19,911 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 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 18:53:19,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2021-05-02 18:53:19,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:19,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 18:53:19,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 1392 proven. 196 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2021-05-02 18:53:20,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389997806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:20,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:20,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 17] total 67 [2021-05-02 18:53:20,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246428278] [2021-05-02 18:53:20,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:53:20,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:53:20,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:53:20,734 INFO L87 Difference]: Start difference. First operand 136 states and 150 transitions. Second operand has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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 18:53:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:23,707 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-05-02 18:53:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 18:53:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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 135 [2021-05-02 18:53:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:23,708 INFO L225 Difference]: With dead ends: 141 [2021-05-02 18:53:23,708 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 18:53:23,709 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 4195.1ms TimeCoverageRelationStatistics Valid=6435, Invalid=10595, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 18:53:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 18:53:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-05-02 18:53:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 135 states have internal predecessors, (151), 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 18:53:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2021-05-02 18:53:23,710 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 135 [2021-05-02 18:53:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:23,710 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2021-05-02 18:53:23,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 66 states have internal predecessors, (141), 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 18:53:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2021-05-02 18:53:23,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 18:53:23,711 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:23,711 INFO L523 BasicCegarLoop]: trace histogram [64, 49, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:23,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 18:53:23,925 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1356641577, now seen corresponding path program 46 times [2021-05-02 18:53:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:23,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999279468] [2021-05-02 18:53:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:53:24,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:24,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999279468] [2021-05-02 18:53:24,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999279468] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:24,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73256972] [2021-05-02 18:53:24,918 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 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 18:53:24,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:24,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:24,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 18:53:24,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:24,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:24,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:24,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:24,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 1450 proven. 2450 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:53:25,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73256972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:25,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:25,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 18:53:25,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513903139] [2021-05-02 18:53:25,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 18:53:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:25,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 18:53:25,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 18:53:25,198 INFO L87 Difference]: Start difference. First operand 140 states and 155 transitions. Second operand has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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 18:53:27,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:27,278 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-05-02 18:53:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 18:53:27,278 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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 139 [2021-05-02 18:53:27,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:27,279 INFO L225 Difference]: With dead ends: 142 [2021-05-02 18:53:27,279 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 18:53:27,280 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 2767.4ms TimeCoverageRelationStatistics Valid=4031, Invalid=6681, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 18:53:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 18:53:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-05-02 18:53:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1167883211678833) internal successors, (153), 137 states have internal predecessors, (153), 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 18:53:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2021-05-02 18:53:27,281 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 139 [2021-05-02 18:53:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:27,281 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2021-05-02 18:53:27,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 53 states have internal predecessors, (113), 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 18:53:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2021-05-02 18:53:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 18:53:27,282 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:27,282 INFO L523 BasicCegarLoop]: trace histogram [65, 50, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:27,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:27,497 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:27,497 INFO L82 PathProgramCache]: Analyzing trace with hash 926242453, now seen corresponding path program 47 times [2021-05-02 18:53:27,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:27,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575060878] [2021-05-02 18:53:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:53:28,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:28,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575060878] [2021-05-02 18:53:28,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575060878] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:28,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901586406] [2021-05-02 18:53:28,474 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 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 18:53:28,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 18:53:28,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:28,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 18:53:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:28,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4225 backedges. 1479 proven. 2550 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:53:28,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901586406] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:28,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:28,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 55 [2021-05-02 18:53:28,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351336862] [2021-05-02 18:53:28,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 18:53:28,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:28,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 18:53:28,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 18:53:28,768 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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 18:53:30,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:30,951 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2021-05-02 18:53:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 18:53:30,951 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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 141 [2021-05-02 18:53:30,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:30,952 INFO L225 Difference]: With dead ends: 144 [2021-05-02 18:53:30,952 INFO L226 Difference]: Without dead ends: 144 [2021-05-02 18:53:30,952 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 2843.6ms TimeCoverageRelationStatistics Valid=4188, Invalid=6942, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 18:53:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-02 18:53:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2021-05-02 18:53:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.1151079136690647) internal successors, (155), 139 states have internal predecessors, (155), 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 18:53:30,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-05-02 18:53:30,954 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 141 [2021-05-02 18:53:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:30,954 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-05-02 18:53:30,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.090909090909091) internal successors, (115), 54 states have internal predecessors, (115), 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 18:53:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2021-05-02 18:53:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 18:53:30,955 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:30,955 INFO L523 BasicCegarLoop]: trace histogram [66, 51, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:31,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:31,169 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 49507027, now seen corresponding path program 48 times [2021-05-02 18:53:31,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:31,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900389472] [2021-05-02 18:53:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:32,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 1508 proven. 2652 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-05-02 18:53:32,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:32,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900389472] [2021-05-02 18:53:32,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900389472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:32,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623983567] [2021-05-02 18:53:32,204 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 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 18:53:32,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 63 check-sat command(s) [2021-05-02 18:53:32,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:32,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 18:53:32,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:32,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:32,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 1581 proven. 225 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2021-05-02 18:53:33,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623983567] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:33,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:33,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 18] total 71 [2021-05-02 18:53:33,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716064111] [2021-05-02 18:53:33,199 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 18:53:33,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 18:53:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 18:53:33,199 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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 18:53:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:36,526 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2021-05-02 18:53:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:53:36,526 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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 143 [2021-05-02 18:53:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:36,527 INFO L225 Difference]: With dead ends: 149 [2021-05-02 18:53:36,527 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:53:36,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2329 ImplicationChecksByTransitivity, 4759.9ms TimeCoverageRelationStatistics Valid=7245, Invalid=11937, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 18:53:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:53:36,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-05-02 18:53:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 143 states have (on average 1.118881118881119) internal successors, (160), 143 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 18:53:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2021-05-02 18:53:36,529 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 143 [2021-05-02 18:53:36,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:36,530 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2021-05-02 18:53:36,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.0985915492957745) internal successors, (149), 70 states have internal predecessors, (149), 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 18:53:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2021-05-02 18:53:36,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 18:53:36,530 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:36,530 INFO L523 BasicCegarLoop]: trace histogram [68, 52, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:36,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:36,731 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash 632972590, now seen corresponding path program 49 times [2021-05-02 18:53:36,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:36,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019169954] [2021-05-02 18:53:36,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:37,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:53:37,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:37,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019169954] [2021-05-02 18:53:37,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019169954] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:37,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630890653] [2021-05-02 18:53:37,795 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 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 18:53:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:37,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 18:53:37,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:37,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:37,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 1643 proven. 2756 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:53:38,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630890653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:38,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:38,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 57 [2021-05-02 18:53:38,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516508117] [2021-05-02 18:53:38,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 18:53:38,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:38,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 18:53:38,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 18:53:38,078 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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 18:53:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:40,352 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2021-05-02 18:53:40,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 18:53:40,353 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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 147 [2021-05-02 18:53:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:40,353 INFO L225 Difference]: With dead ends: 150 [2021-05-02 18:53:40,353 INFO L226 Difference]: Without dead ends: 150 [2021-05-02 18:53:40,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1583 ImplicationChecksByTransitivity, 3040.2ms TimeCoverageRelationStatistics Valid=4511, Invalid=7479, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 18:53:40,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-02 18:53:40,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-05-02 18:53:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.1172413793103448) internal successors, (162), 145 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 18:53:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2021-05-02 18:53:40,355 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 147 [2021-05-02 18:53:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:40,356 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2021-05-02 18:53:40,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.087719298245614) internal successors, (119), 56 states have internal predecessors, (119), 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 18:53:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2021-05-02 18:53:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 18:53:40,356 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:40,356 INFO L523 BasicCegarLoop]: trace histogram [69, 53, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:40,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:40,561 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2002506476, now seen corresponding path program 50 times [2021-05-02 18:53:40,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:40,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422002935] [2021-05-02 18:53:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:41,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:53:41,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:41,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422002935] [2021-05-02 18:53:41,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422002935] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:41,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652983861] [2021-05-02 18:53:41,662 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 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 18:53:41,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:53:41,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:41,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 18:53:41,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4761 backedges. 1674 proven. 2862 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:53:41,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652983861] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:41,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:41,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 18:53:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488321191] [2021-05-02 18:53:41,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 18:53:41,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 18:53:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 18:53:41,958 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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 18:53:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:44,288 INFO L93 Difference]: Finished difference Result 152 states and 168 transitions. [2021-05-02 18:53:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 18:53:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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 149 [2021-05-02 18:53:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:44,289 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:53:44,289 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:53:44,290 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 3145.1ms TimeCoverageRelationStatistics Valid=4677, Invalid=7755, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 18:53:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:53:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-05-02 18:53:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 147 states have (on average 1.1156462585034013) internal successors, (164), 147 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 18:53:44,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 168 transitions. [2021-05-02 18:53:44,291 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 168 transitions. Word has length 149 [2021-05-02 18:53:44,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:44,291 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 168 transitions. [2021-05-02 18:53:44,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 57 states have internal predecessors, (121), 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 18:53:44,291 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 168 transitions. [2021-05-02 18:53:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 18:53:44,292 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:44,292 INFO L523 BasicCegarLoop]: trace histogram [70, 54, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:44,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 18:53:44,492 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:44,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:44,493 INFO L82 PathProgramCache]: Analyzing trace with hash -430388950, now seen corresponding path program 51 times [2021-05-02 18:53:44,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:44,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116737761] [2021-05-02 18:53:44,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:45,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1705 proven. 2970 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-05-02 18:53:45,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:45,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116737761] [2021-05-02 18:53:45,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116737761] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:45,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590435943] [2021-05-02 18:53:45,654 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 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 18:53:45,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 18:53:45,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 18:53:45,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:45,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:45,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1782 proven. 256 refuted. 0 times theorem prover too weak. 2862 trivial. 0 not checked. [2021-05-02 18:53:46,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590435943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:46,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:46,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 19] total 75 [2021-05-02 18:53:46,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716103973] [2021-05-02 18:53:46,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:53:46,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:53:46,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:53:46,679 INFO L87 Difference]: Start difference. First operand 152 states and 168 transitions. Second operand has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 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 18:53:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:50,419 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2021-05-02 18:53:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:53:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 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 151 [2021-05-02 18:53:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:50,420 INFO L225 Difference]: With dead ends: 157 [2021-05-02 18:53:50,421 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 18:53:50,421 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 5287.7ms TimeCoverageRelationStatistics Valid=8103, Invalid=13359, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 18:53:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 18:53:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2021-05-02 18:53:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 151 states have (on average 1.119205298013245) internal successors, (169), 151 states have internal predecessors, (169), 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 18:53:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2021-05-02 18:53:50,423 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 151 [2021-05-02 18:53:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:50,423 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2021-05-02 18:53:50,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0933333333333333) internal successors, (157), 74 states have internal predecessors, (157), 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 18:53:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2021-05-02 18:53:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 18:53:50,424 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:50,424 INFO L523 BasicCegarLoop]: trace histogram [72, 55, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:50,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:50,637 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:50,637 INFO L82 PathProgramCache]: Analyzing trace with hash 171928517, now seen corresponding path program 52 times [2021-05-02 18:53:50,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:50,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707546782] [2021-05-02 18:53:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:51,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:53:51,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:51,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707546782] [2021-05-02 18:53:51,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707546782] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:51,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780731011] [2021-05-02 18:53:51,851 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 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 18:53:51,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:53:51,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:51,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 18:53:51,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:51,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:51,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 1848 proven. 3080 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:53:52,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780731011] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:52,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:52,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 60 [2021-05-02 18:53:52,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407517673] [2021-05-02 18:53:52,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 18:53:52,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:52,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 18:53:52,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 18:53:52,159 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 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 18:53:54,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:54,651 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2021-05-02 18:53:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 18:53:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 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 155 [2021-05-02 18:53:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:54,652 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:53:54,652 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 18:53:54,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 3398.7ms TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 18:53:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 18:53:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-05-02 18:53:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.1176470588235294) internal successors, (171), 153 states have internal predecessors, (171), 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 18:53:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 175 transitions. [2021-05-02 18:53:54,654 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 175 transitions. Word has length 155 [2021-05-02 18:53:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:54,654 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 175 transitions. [2021-05-02 18:53:54,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 59 states have internal predecessors, (125), 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 18:53:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 175 transitions. [2021-05-02 18:53:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 18:53:54,655 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:54,655 INFO L523 BasicCegarLoop]: trace histogram [73, 56, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:54,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 18:53:54,869 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1492007811, now seen corresponding path program 53 times [2021-05-02 18:53:54,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:54,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826823346] [2021-05-02 18:53:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:53:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:53:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:53:56,113 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:53:56,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826823346] [2021-05-02 18:53:56,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826823346] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:56,113 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5921582] [2021-05-02 18:53:56,113 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 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 18:53:56,191 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2021-05-02 18:53:56,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:53:56,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 18:53:56,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:53:56,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5329 backedges. 1881 proven. 3192 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:53:56,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5921582] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:53:56,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:53:56,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 61 [2021-05-02 18:53:56,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907682530] [2021-05-02 18:53:56,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 18:53:56,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:53:56,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 18:53:56,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 18:53:56,519 INFO L87 Difference]: Start difference. First operand 158 states and 175 transitions. Second operand has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 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 18:53:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:53:59,046 INFO L93 Difference]: Finished difference Result 160 states and 177 transitions. [2021-05-02 18:53:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 18:53:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 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 157 [2021-05-02 18:53:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:53:59,047 INFO L225 Difference]: With dead ends: 160 [2021-05-02 18:53:59,047 INFO L226 Difference]: Without dead ends: 160 [2021-05-02 18:53:59,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1817 ImplicationChecksByTransitivity, 3468.2ms TimeCoverageRelationStatistics Valid=5193, Invalid=8613, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 18:53:59,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-05-02 18:53:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-05-02 18:53:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1161290322580646) internal successors, (173), 155 states have internal predecessors, (173), 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 18:53:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2021-05-02 18:53:59,049 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 177 transitions. Word has length 157 [2021-05-02 18:53:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:53:59,049 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-05-02 18:53:59,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.081967213114754) internal successors, (127), 60 states have internal predecessors, (127), 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 18:53:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 177 transitions. [2021-05-02 18:53:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 18:53:59,050 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:53:59,050 INFO L523 BasicCegarLoop]: trace histogram [74, 57, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:53:59,265 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:53:59,265 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:53:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:53:59,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1222110271, now seen corresponding path program 54 times [2021-05-02 18:53:59,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:53:59,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009652925] [2021-05-02 18:53:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:53:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 1914 proven. 3306 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-05-02 18:54:00,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:00,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009652925] [2021-05-02 18:54:00,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009652925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:00,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106627917] [2021-05-02 18:54:00,543 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 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 18:54:00,638 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 71 check-sat command(s) [2021-05-02 18:54:00,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:00,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 18:54:00,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:00,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:00,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 1995 proven. 289 refuted. 0 times theorem prover too weak. 3192 trivial. 0 not checked. [2021-05-02 18:54:01,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106627917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:01,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:01,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 20] total 79 [2021-05-02 18:54:01,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026783871] [2021-05-02 18:54:01,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:54:01,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:01,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:54:01,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:54:01,697 INFO L87 Difference]: Start difference. First operand 160 states and 177 transitions. Second operand has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 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 18:54:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:05,727 INFO L93 Difference]: Finished difference Result 165 states and 184 transitions. [2021-05-02 18:54:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 18:54:05,727 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 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 159 [2021-05-02 18:54:05,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:05,728 INFO L225 Difference]: With dead ends: 165 [2021-05-02 18:54:05,728 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 18:54:05,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 5767.2ms TimeCoverageRelationStatistics Valid=9009, Invalid=14861, Unknown=0, NotChecked=0, Total=23870 [2021-05-02 18:54:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 18:54:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-05-02 18:54:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 159 states have (on average 1.119496855345912) internal successors, (178), 159 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 18:54:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2021-05-02 18:54:05,733 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 159 [2021-05-02 18:54:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:05,733 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2021-05-02 18:54:05,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.088607594936709) internal successors, (165), 78 states have internal predecessors, (165), 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 18:54:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2021-05-02 18:54:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 18:54:05,734 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:05,734 INFO L523 BasicCegarLoop]: trace histogram [76, 58, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:05,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:05,935 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1180847772, now seen corresponding path program 55 times [2021-05-02 18:54:05,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:05,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120142750] [2021-05-02 18:54:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:07,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:54:07,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:07,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120142750] [2021-05-02 18:54:07,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120142750] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:07,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468894492] [2021-05-02 18:54:07,288 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 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 18:54:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:07,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 18:54:07,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:07,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 2065 proven. 3422 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:54:07,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468894492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:07,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:07,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 63 [2021-05-02 18:54:07,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504531642] [2021-05-02 18:54:07,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 18:54:07,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:07,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 18:54:07,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 18:54:07,620 INFO L87 Difference]: Start difference. First operand 164 states and 182 transitions. Second operand has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 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 18:54:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:10,292 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2021-05-02 18:54:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 18:54:10,293 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 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 163 [2021-05-02 18:54:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:10,293 INFO L225 Difference]: With dead ends: 166 [2021-05-02 18:54:10,293 INFO L226 Difference]: Without dead ends: 166 [2021-05-02 18:54:10,294 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 3759.6ms TimeCoverageRelationStatistics Valid=5552, Invalid=9210, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 18:54:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-05-02 18:54:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-05-02 18:54:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 161 states have (on average 1.1180124223602483) internal successors, (180), 161 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 18:54:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2021-05-02 18:54:10,295 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 163 [2021-05-02 18:54:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:10,296 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2021-05-02 18:54:10,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0793650793650795) internal successors, (131), 62 states have internal predecessors, (131), 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 18:54:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2021-05-02 18:54:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 18:54:10,296 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:10,296 INFO L523 BasicCegarLoop]: trace histogram [77, 59, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:10,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 18:54:10,511 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:10,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1738309722, now seen corresponding path program 56 times [2021-05-02 18:54:10,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:10,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489101433] [2021-05-02 18:54:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:11,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:54:11,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:11,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489101433] [2021-05-02 18:54:11,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489101433] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:11,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979899157] [2021-05-02 18:54:11,875 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 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 18:54:11,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:11,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:11,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 18:54:11,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:12,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 2100 proven. 3540 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:54:12,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979899157] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:12,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:12,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 18:54:12,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635272878] [2021-05-02 18:54:12,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 18:54:12,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:12,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 18:54:12,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 18:54:12,208 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 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 18:54:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:14,889 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions. [2021-05-02 18:54:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 18:54:14,889 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 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 165 [2021-05-02 18:54:14,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:14,890 INFO L225 Difference]: With dead ends: 168 [2021-05-02 18:54:14,890 INFO L226 Difference]: Without dead ends: 168 [2021-05-02 18:54:14,890 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 3826.0ms TimeCoverageRelationStatistics Valid=5736, Invalid=9516, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 18:54:14,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-05-02 18:54:14,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-05-02 18:54:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 163 states have (on average 1.116564417177914) internal successors, (182), 163 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 18:54:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 186 transitions. [2021-05-02 18:54:14,898 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 186 transitions. Word has length 165 [2021-05-02 18:54:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:14,898 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 186 transitions. [2021-05-02 18:54:14,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.078125) internal successors, (133), 63 states have internal predecessors, (133), 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 18:54:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 186 transitions. [2021-05-02 18:54:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 18:54:14,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:14,899 INFO L523 BasicCegarLoop]: trace histogram [78, 60, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:15,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:15,114 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:15,114 INFO L82 PathProgramCache]: Analyzing trace with hash 588331672, now seen corresponding path program 57 times [2021-05-02 18:54:15,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:15,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647273909] [2021-05-02 18:54:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:16,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:16,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 2135 proven. 3660 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-05-02 18:54:16,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647273909] [2021-05-02 18:54:16,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647273909] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:16,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50306151] [2021-05-02 18:54:16,546 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 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 18:54:16,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 38 check-sat command(s) [2021-05-02 18:54:16,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:16,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 18:54:16,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:16,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:16,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 2220 proven. 324 refuted. 0 times theorem prover too weak. 3540 trivial. 0 not checked. [2021-05-02 18:54:17,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50306151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:17,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:17,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 21] total 83 [2021-05-02 18:54:17,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229557132] [2021-05-02 18:54:17,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 18:54:17,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 18:54:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3323, Invalid=3483, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 18:54:17,783 INFO L87 Difference]: Start difference. First operand 168 states and 186 transitions. Second operand has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 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 18:54:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:22,327 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2021-05-02 18:54:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:54:22,327 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 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 167 [2021-05-02 18:54:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:22,328 INFO L225 Difference]: With dead ends: 173 [2021-05-02 18:54:22,328 INFO L226 Difference]: Without dead ends: 173 [2021-05-02 18:54:22,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3220 ImplicationChecksByTransitivity, 6464.9ms TimeCoverageRelationStatistics Valid=9963, Invalid=16443, Unknown=0, NotChecked=0, Total=26406 [2021-05-02 18:54:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-02 18:54:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-05-02 18:54:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.1197604790419162) internal successors, (187), 167 states have internal predecessors, (187), 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 18:54:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2021-05-02 18:54:22,331 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 167 [2021-05-02 18:54:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:22,331 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2021-05-02 18:54:22,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0843373493975905) internal successors, (173), 82 states have internal predecessors, (173), 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 18:54:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2021-05-02 18:54:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 18:54:22,332 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:22,332 INFO L523 BasicCegarLoop]: trace histogram [80, 61, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:22,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-05-02 18:54:22,544 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:22,544 INFO L82 PathProgramCache]: Analyzing trace with hash -40436301, now seen corresponding path program 58 times [2021-05-02 18:54:22,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:22,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996249783] [2021-05-02 18:54:22,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:54:24,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:24,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996249783] [2021-05-02 18:54:24,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996249783] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:24,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565635472] [2021-05-02 18:54:24,022 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 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 18:54:24,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:54:24,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:24,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 18:54:24,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 2294 proven. 3782 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:54:24,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565635472] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:24,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:24,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 18:54:24,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836101427] [2021-05-02 18:54:24,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 18:54:24,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:24,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 18:54:24,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 18:54:24,402 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 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 18:54:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:27,407 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2021-05-02 18:54:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 18:54:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 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 171 [2021-05-02 18:54:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:27,408 INFO L225 Difference]: With dead ends: 174 [2021-05-02 18:54:27,409 INFO L226 Difference]: Without dead ends: 174 [2021-05-02 18:54:27,409 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 4126.3ms TimeCoverageRelationStatistics Valid=6113, Invalid=10143, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 18:54:27,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-05-02 18:54:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-05-02 18:54:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.1183431952662721) internal successors, (189), 169 states have internal predecessors, (189), 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 18:54:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2021-05-02 18:54:27,411 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 171 [2021-05-02 18:54:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:27,411 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2021-05-02 18:54:27,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.0757575757575757) internal successors, (137), 65 states have internal predecessors, (137), 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 18:54:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2021-05-02 18:54:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 18:54:27,412 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:27,412 INFO L523 BasicCegarLoop]: trace histogram [81, 62, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:27,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:27,628 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1759154545, now seen corresponding path program 59 times [2021-05-02 18:54:27,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:27,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086886150] [2021-05-02 18:54:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:54:29,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:29,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086886150] [2021-05-02 18:54:29,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086886150] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:29,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601856396] [2021-05-02 18:54:29,163 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 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 18:54:29,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2021-05-02 18:54:29,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:29,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 18:54:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:29,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2331 proven. 3906 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:54:29,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601856396] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:29,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:29,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 67 [2021-05-02 18:54:29,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966605991] [2021-05-02 18:54:29,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 18:54:29,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:29,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 18:54:29,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 18:54:29,544 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 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 18:54:32,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:32,625 INFO L93 Difference]: Finished difference Result 176 states and 195 transitions. [2021-05-02 18:54:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 18:54:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 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 173 [2021-05-02 18:54:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:32,626 INFO L225 Difference]: With dead ends: 176 [2021-05-02 18:54:32,626 INFO L226 Difference]: Without dead ends: 176 [2021-05-02 18:54:32,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4258.0ms TimeCoverageRelationStatistics Valid=6306, Invalid=10464, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 18:54:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-05-02 18:54:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-05-02 18:54:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 171 states have (on average 1.1169590643274854) internal successors, (191), 171 states have internal predecessors, (191), 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 18:54:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2021-05-02 18:54:32,628 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 173 [2021-05-02 18:54:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:32,629 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2021-05-02 18:54:32,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.074626865671642) internal successors, (139), 66 states have internal predecessors, (139), 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 18:54:32,629 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2021-05-02 18:54:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 18:54:32,629 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:32,629 INFO L523 BasicCegarLoop]: trace histogram [82, 63, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:32,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-05-02 18:54:32,830 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:32,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:32,831 INFO L82 PathProgramCache]: Analyzing trace with hash 294137263, now seen corresponding path program 60 times [2021-05-02 18:54:32,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:32,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929193153] [2021-05-02 18:54:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 2368 proven. 4032 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 18:54:34,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:34,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929193153] [2021-05-02 18:54:34,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929193153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:34,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152345863] [2021-05-02 18:54:34,426 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 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 18:54:34,542 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 18:54:34,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:34,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 18:54:34,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:34,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 2457 proven. 361 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2021-05-02 18:54:35,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152345863] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:35,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:35,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 22] total 87 [2021-05-02 18:54:35,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014015666] [2021-05-02 18:54:35,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:54:35,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:35,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:54:35,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:54:35,879 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 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 18:54:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:40,925 INFO L93 Difference]: Finished difference Result 181 states and 202 transitions. [2021-05-02 18:54:40,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:54:40,926 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 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 175 [2021-05-02 18:54:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:40,927 INFO L225 Difference]: With dead ends: 181 [2021-05-02 18:54:40,927 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 18:54:40,928 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3549 ImplicationChecksByTransitivity, 7251.9ms TimeCoverageRelationStatistics Valid=10965, Invalid=18105, Unknown=0, NotChecked=0, Total=29070 [2021-05-02 18:54:40,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 18:54:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-05-02 18:54:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.12) internal successors, (196), 175 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 18:54:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 200 transitions. [2021-05-02 18:54:40,930 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 200 transitions. Word has length 175 [2021-05-02 18:54:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:40,930 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 200 transitions. [2021-05-02 18:54:40,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.0804597701149423) internal successors, (181), 86 states have internal predecessors, (181), 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 18:54:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 200 transitions. [2021-05-02 18:54:40,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 18:54:40,930 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:40,931 INFO L523 BasicCegarLoop]: trace histogram [84, 64, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:41,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:41,148 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash 739600650, now seen corresponding path program 61 times [2021-05-02 18:54:41,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:41,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943125788] [2021-05-02 18:54:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:54:42,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:42,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943125788] [2021-05-02 18:54:42,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943125788] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:42,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441708597] [2021-05-02 18:54:42,786 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 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 18:54:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:42,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 18:54:42,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:42,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:42,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 2535 proven. 4160 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:54:43,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441708597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:43,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:43,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 69 [2021-05-02 18:54:43,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135389660] [2021-05-02 18:54:43,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 18:54:43,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:43,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 18:54:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 18:54:43,165 INFO L87 Difference]: Start difference. First operand 180 states and 200 transitions. Second operand has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 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 18:54:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:46,328 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-05-02 18:54:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 18:54:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 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 179 [2021-05-02 18:54:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:46,329 INFO L225 Difference]: With dead ends: 182 [2021-05-02 18:54:46,329 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 18:54:46,330 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 4496.4ms TimeCoverageRelationStatistics Valid=6701, Invalid=11121, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 18:54:46,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 18:54:46,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-05-02 18:54:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 177 states have (on average 1.11864406779661) internal successors, (198), 177 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 18:54:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 202 transitions. [2021-05-02 18:54:46,332 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 202 transitions. Word has length 179 [2021-05-02 18:54:46,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:46,332 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 202 transitions. [2021-05-02 18:54:46,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.072463768115942) internal successors, (143), 68 states have internal predecessors, (143), 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 18:54:46,332 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 202 transitions. [2021-05-02 18:54:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 18:54:46,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:46,333 INFO L523 BasicCegarLoop]: trace histogram [85, 65, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:46,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-05-02 18:54:46,548 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash -85958968, now seen corresponding path program 62 times [2021-05-02 18:54:46,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:46,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107343419] [2021-05-02 18:54:46,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:54:48,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:48,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107343419] [2021-05-02 18:54:48,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107343419] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:48,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740170851] [2021-05-02 18:54:48,225 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 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 18:54:48,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:54:48,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:48,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 18:54:48,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7225 backedges. 2574 proven. 4290 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:54:48,582 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740170851] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:48,582 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:48,582 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 18:54:48,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787574094] [2021-05-02 18:54:48,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 18:54:48,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:48,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 18:54:48,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 18:54:48,583 INFO L87 Difference]: Start difference. First operand 182 states and 202 transitions. Second operand has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 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 18:54:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:54:51,937 INFO L93 Difference]: Finished difference Result 184 states and 204 transitions. [2021-05-02 18:54:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 18:54:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 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 181 [2021-05-02 18:54:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:54:51,938 INFO L225 Difference]: With dead ends: 184 [2021-05-02 18:54:51,938 INFO L226 Difference]: Without dead ends: 184 [2021-05-02 18:54:51,939 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4656.4ms TimeCoverageRelationStatistics Valid=6903, Invalid=11457, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 18:54:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-05-02 18:54:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-05-02 18:54:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 179 states have (on average 1.1173184357541899) internal successors, (200), 179 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 18:54:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2021-05-02 18:54:51,941 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 181 [2021-05-02 18:54:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:54:51,941 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2021-05-02 18:54:51,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.0714285714285716) internal successors, (145), 69 states have internal predecessors, (145), 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 18:54:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2021-05-02 18:54:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 18:54:51,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:54:51,942 INFO L523 BasicCegarLoop]: trace histogram [86, 66, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:54:52,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:54:52,152 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:54:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:54:52,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1120197894, now seen corresponding path program 63 times [2021-05-02 18:54:52,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:54:52,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139036760] [2021-05-02 18:54:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:54:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:53,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:54:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:54:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 2613 proven. 4422 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2021-05-02 18:54:53,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:54:53,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139036760] [2021-05-02 18:54:53,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139036760] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:53,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262759754] [2021-05-02 18:54:53,878 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 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 18:54:53,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2021-05-02 18:54:53,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:54:53,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 18:54:53,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:54:54,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:54,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:54:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 2706 proven. 400 refuted. 0 times theorem prover too weak. 4290 trivial. 0 not checked. [2021-05-02 18:54:55,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262759754] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:54:55,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:54:55,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 23] total 91 [2021-05-02 18:54:55,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650355721] [2021-05-02 18:54:55,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:54:55,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:54:55,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:54:55,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:54:55,406 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 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 18:55:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:00,861 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2021-05-02 18:55:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:55:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 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 183 [2021-05-02 18:55:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:00,862 INFO L225 Difference]: With dead ends: 189 [2021-05-02 18:55:00,862 INFO L226 Difference]: Without dead ends: 189 [2021-05-02 18:55:00,863 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 7867.9ms TimeCoverageRelationStatistics Valid=12015, Invalid=19847, Unknown=0, NotChecked=0, Total=31862 [2021-05-02 18:55:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-05-02 18:55:00,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-05-02 18:55:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 183 states have (on average 1.1202185792349726) internal successors, (205), 183 states have internal predecessors, (205), 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 18:55:00,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2021-05-02 18:55:00,865 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 183 [2021-05-02 18:55:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:00,865 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2021-05-02 18:55:00,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.076923076923077) internal successors, (189), 90 states have internal predecessors, (189), 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 18:55:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2021-05-02 18:55:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 18:55:00,866 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:00,866 INFO L523 BasicCegarLoop]: trace histogram [88, 67, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:01,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 18:55:01,081 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:01,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2049343327, now seen corresponding path program 64 times [2021-05-02 18:55:01,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:01,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407575040] [2021-05-02 18:55:01,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:55:02,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:02,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407575040] [2021-05-02 18:55:02,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407575040] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:02,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984539435] [2021-05-02 18:55:02,982 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 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 18:55:03,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:55:03,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:03,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 18:55:03,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 2788 proven. 4556 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:55:03,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984539435] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:03,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:03,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 18:55:03,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660262469] [2021-05-02 18:55:03,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 18:55:03,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:03,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 18:55:03,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 18:55:03,403 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 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 18:55:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:06,846 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2021-05-02 18:55:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 18:55:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 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 187 [2021-05-02 18:55:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:06,847 INFO L225 Difference]: With dead ends: 190 [2021-05-02 18:55:06,847 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 18:55:06,848 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2543 ImplicationChecksByTransitivity, 5042.5ms TimeCoverageRelationStatistics Valid=7316, Invalid=12144, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 18:55:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 18:55:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-05-02 18:55:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1189189189189188) internal successors, (207), 185 states have internal predecessors, (207), 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 18:55:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2021-05-02 18:55:06,850 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 187 [2021-05-02 18:55:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:06,850 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2021-05-02 18:55:06,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0694444444444446) internal successors, (149), 71 states have internal predecessors, (149), 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 18:55:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2021-05-02 18:55:06,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 18:55:06,850 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:06,851 INFO L523 BasicCegarLoop]: trace histogram [89, 68, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:07,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 18:55:07,065 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1940510815, now seen corresponding path program 65 times [2021-05-02 18:55:07,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:07,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678356884] [2021-05-02 18:55:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:08,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:55:08,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:08,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678356884] [2021-05-02 18:55:08,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678356884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:08,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451551206] [2021-05-02 18:55:08,913 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 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 18:55:09,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 18:55:09,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:09,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 18:55:09,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:09,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7921 backedges. 2829 proven. 4692 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:55:09,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451551206] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:09,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:09,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 73 [2021-05-02 18:55:09,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440587874] [2021-05-02 18:55:09,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 18:55:09,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:09,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 18:55:09,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 18:55:09,349 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 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 18:55:12,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:12,891 INFO L93 Difference]: Finished difference Result 192 states and 213 transitions. [2021-05-02 18:55:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 18:55:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 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 189 [2021-05-02 18:55:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:12,892 INFO L225 Difference]: With dead ends: 192 [2021-05-02 18:55:12,892 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 18:55:12,893 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2615 ImplicationChecksByTransitivity, 5136.6ms TimeCoverageRelationStatistics Valid=7527, Invalid=12495, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 18:55:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 18:55:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-05-02 18:55:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.1176470588235294) internal successors, (209), 187 states have internal predecessors, (209), 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 18:55:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2021-05-02 18:55:12,894 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 189 [2021-05-02 18:55:12,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:12,895 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2021-05-02 18:55:12,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0684931506849313) internal successors, (151), 72 states have internal predecessors, (151), 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 18:55:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2021-05-02 18:55:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 18:55:12,895 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:12,895 INFO L523 BasicCegarLoop]: trace histogram [90, 69, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:13,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-05-02 18:55:13,096 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:13,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:13,096 INFO L82 PathProgramCache]: Analyzing trace with hash 784545949, now seen corresponding path program 66 times [2021-05-02 18:55:13,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:13,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869189122] [2021-05-02 18:55:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:15,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 2870 proven. 4830 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-05-02 18:55:15,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:15,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869189122] [2021-05-02 18:55:15,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869189122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:15,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374144990] [2021-05-02 18:55:15,032 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 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 18:55:15,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 87 check-sat command(s) [2021-05-02 18:55:15,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:15,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 18:55:15,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:15,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:15,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 2967 proven. 441 refuted. 0 times theorem prover too weak. 4692 trivial. 0 not checked. [2021-05-02 18:55:16,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374144990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:16,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:16,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 24] total 95 [2021-05-02 18:55:16,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556177945] [2021-05-02 18:55:16,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 18:55:16,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:16,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 18:55:16,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4373, Invalid=4557, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 18:55:16,805 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 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 18:55:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:22,845 INFO L93 Difference]: Finished difference Result 197 states and 220 transitions. [2021-05-02 18:55:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:55:22,845 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 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 191 [2021-05-02 18:55:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:22,846 INFO L225 Difference]: With dead ends: 197 [2021-05-02 18:55:22,846 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 18:55:22,847 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4255 ImplicationChecksByTransitivity, 8817.4ms TimeCoverageRelationStatistics Valid=13113, Invalid=21669, Unknown=0, NotChecked=0, Total=34782 [2021-05-02 18:55:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 18:55:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2021-05-02 18:55:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.1204188481675392) internal successors, (214), 191 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 18:55:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 218 transitions. [2021-05-02 18:55:22,849 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 218 transitions. Word has length 191 [2021-05-02 18:55:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:22,849 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 218 transitions. [2021-05-02 18:55:22,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.0736842105263156) internal successors, (197), 94 states have internal predecessors, (197), 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 18:55:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 218 transitions. [2021-05-02 18:55:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 18:55:22,850 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:22,850 INFO L523 BasicCegarLoop]: trace histogram [92, 70, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:23,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:23,066 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:23,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1784466312, now seen corresponding path program 67 times [2021-05-02 18:55:23,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:23,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849737683] [2021-05-02 18:55:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:25,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:55:25,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:25,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849737683] [2021-05-02 18:55:25,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849737683] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:25,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127570641] [2021-05-02 18:55:25,117 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 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 18:55:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:25,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 18:55:25,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:25,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 3053 proven. 4970 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:55:25,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127570641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:25,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:25,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 75 [2021-05-02 18:55:25,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422910059] [2021-05-02 18:55:25,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 18:55:25,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 18:55:25,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 18:55:25,539 INFO L87 Difference]: Start difference. First operand 196 states and 218 transitions. Second operand has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 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 18:55:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:29,513 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2021-05-02 18:55:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 18:55:29,514 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 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 195 [2021-05-02 18:55:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:29,514 INFO L225 Difference]: With dead ends: 198 [2021-05-02 18:55:29,514 INFO L226 Difference]: Without dead ends: 198 [2021-05-02 18:55:29,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 5581.4ms TimeCoverageRelationStatistics Valid=7958, Invalid=13212, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 18:55:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-05-02 18:55:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-05-02 18:55:29,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.1191709844559585) internal successors, (216), 193 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 18:55:29,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 220 transitions. [2021-05-02 18:55:29,517 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 220 transitions. Word has length 195 [2021-05-02 18:55:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:29,517 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 220 transitions. [2021-05-02 18:55:29,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.066666666666667) internal successors, (155), 74 states have internal predecessors, (155), 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 18:55:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 220 transitions. [2021-05-02 18:55:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 18:55:29,518 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:29,518 INFO L523 BasicCegarLoop]: trace histogram [93, 71, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:29,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:29,731 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash -594378, now seen corresponding path program 68 times [2021-05-02 18:55:29,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:29,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651444772] [2021-05-02 18:55:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:31,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:55:31,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:31,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651444772] [2021-05-02 18:55:31,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651444772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:31,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019777670] [2021-05-02 18:55:31,821 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 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 18:55:31,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:55:31,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:31,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 18:55:31,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:31,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8649 backedges. 3096 proven. 5112 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:55:32,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019777670] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:32,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:32,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 18:55:32,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941272769] [2021-05-02 18:55:32,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 18:55:32,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 18:55:32,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 18:55:32,263 INFO L87 Difference]: Start difference. First operand 198 states and 220 transitions. Second operand has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 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 18:55:36,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:36,251 INFO L93 Difference]: Finished difference Result 200 states and 222 transitions. [2021-05-02 18:55:36,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 18:55:36,252 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 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 197 [2021-05-02 18:55:36,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:36,252 INFO L225 Difference]: With dead ends: 200 [2021-05-02 18:55:36,252 INFO L226 Difference]: Without dead ends: 200 [2021-05-02 18:55:36,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 5697.5ms TimeCoverageRelationStatistics Valid=8178, Invalid=13578, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 18:55:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-05-02 18:55:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-05-02 18:55:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.117948717948718) internal successors, (218), 195 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 18:55:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2021-05-02 18:55:36,255 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 197 [2021-05-02 18:55:36,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:36,255 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2021-05-02 18:55:36,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0657894736842106) internal successors, (157), 75 states have internal predecessors, (157), 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 18:55:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2021-05-02 18:55:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 18:55:36,256 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:36,256 INFO L523 BasicCegarLoop]: trace histogram [94, 72, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:36,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:36,461 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:36,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:36,461 INFO L82 PathProgramCache]: Analyzing trace with hash 608383092, now seen corresponding path program 69 times [2021-05-02 18:55:36,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:36,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972040868] [2021-05-02 18:55:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:38,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 3139 proven. 5256 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2021-05-02 18:55:38,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:38,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972040868] [2021-05-02 18:55:38,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972040868] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:38,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821093086] [2021-05-02 18:55:38,609 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 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 18:55:38,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:55:38,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:38,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 18:55:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:38,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:38,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:38,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:38,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:39,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 3240 proven. 484 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-05-02 18:55:40,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821093086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:40,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:40,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 25] total 99 [2021-05-02 18:55:40,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233321236] [2021-05-02 18:55:40,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 18:55:40,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:40,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 18:55:40,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 18:55:40,507 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 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 18:55:47,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:47,016 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2021-05-02 18:55:47,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 18:55:47,017 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 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 199 [2021-05-02 18:55:47,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:47,018 INFO L225 Difference]: With dead ends: 205 [2021-05-02 18:55:47,018 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 18:55:47,019 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4632 ImplicationChecksByTransitivity, 9595.7ms TimeCoverageRelationStatistics Valid=14259, Invalid=23571, Unknown=0, NotChecked=0, Total=37830 [2021-05-02 18:55:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 18:55:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-05-02 18:55:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.120603015075377) internal successors, (223), 199 states have internal predecessors, (223), 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 18:55:47,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 227 transitions. [2021-05-02 18:55:47,021 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 227 transitions. Word has length 199 [2021-05-02 18:55:47,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:47,021 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 227 transitions. [2021-05-02 18:55:47,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0707070707070705) internal successors, (205), 98 states have internal predecessors, (205), 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 18:55:47,021 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 227 transitions. [2021-05-02 18:55:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 18:55:47,022 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:47,022 INFO L523 BasicCegarLoop]: trace histogram [96, 73, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:47,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-05-02 18:55:47,241 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:47,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:47,241 INFO L82 PathProgramCache]: Analyzing trace with hash 469136527, now seen corresponding path program 70 times [2021-05-02 18:55:47,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:47,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046922659] [2021-05-02 18:55:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:55:49,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:49,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046922659] [2021-05-02 18:55:49,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046922659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:49,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534146666] [2021-05-02 18:55:49,416 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 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 18:55:49,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:55:49,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:49,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 18:55:49,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:49,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 3330 proven. 5402 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:55:49,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534146666] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:49,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:49,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 78 [2021-05-02 18:55:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436838711] [2021-05-02 18:55:49,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 18:55:49,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:49,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 18:55:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 18:55:49,885 INFO L87 Difference]: Start difference. First operand 204 states and 227 transitions. Second operand has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 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 18:55:54,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:55:54,069 INFO L93 Difference]: Finished difference Result 206 states and 229 transitions. [2021-05-02 18:55:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 18:55:54,069 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 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 203 [2021-05-02 18:55:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:55:54,070 INFO L225 Difference]: With dead ends: 206 [2021-05-02 18:55:54,070 INFO L226 Difference]: Without dead ends: 206 [2021-05-02 18:55:54,071 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2990 ImplicationChecksByTransitivity, 6022.3ms TimeCoverageRelationStatistics Valid=8627, Invalid=14325, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 18:55:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-05-02 18:55:54,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-05-02 18:55:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.1194029850746268) internal successors, (225), 201 states have internal predecessors, (225), 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 18:55:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 229 transitions. [2021-05-02 18:55:54,073 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 229 transitions. Word has length 203 [2021-05-02 18:55:54,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:55:54,073 INFO L480 AbstractCegarLoop]: Abstraction has 206 states and 229 transitions. [2021-05-02 18:55:54,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.0641025641025643) internal successors, (161), 77 states have internal predecessors, (161), 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 18:55:54,073 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 229 transitions. [2021-05-02 18:55:54,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 18:55:54,074 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:55:54,074 INFO L523 BasicCegarLoop]: trace histogram [97, 74, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:55:54,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:55:54,288 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:55:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:55:54,288 INFO L82 PathProgramCache]: Analyzing trace with hash 38506573, now seen corresponding path program 71 times [2021-05-02 18:55:54,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:55:54,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399247996] [2021-05-02 18:55:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:55:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:55:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:55:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:55:56,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:55:56,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399247996] [2021-05-02 18:55:56,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399247996] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:56,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704888064] [2021-05-02 18:55:56,569 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 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 18:55:56,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 98 check-sat command(s) [2021-05-02 18:55:56,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:55:56,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 18:55:56,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:55:56,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:55:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9409 backedges. 3375 proven. 5550 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:55:57,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704888064] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:55:57,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:55:57,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 79 [2021-05-02 18:55:57,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322830583] [2021-05-02 18:55:57,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 18:55:57,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:55:57,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 18:55:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 18:55:57,114 INFO L87 Difference]: Start difference. First operand 206 states and 229 transitions. Second operand has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 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 18:56:01,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:01,516 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2021-05-02 18:56:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 18:56:01,517 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 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 205 [2021-05-02 18:56:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:01,518 INFO L225 Difference]: With dead ends: 208 [2021-05-02 18:56:01,518 INFO L226 Difference]: Without dead ends: 208 [2021-05-02 18:56:01,519 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 6213.4ms TimeCoverageRelationStatistics Valid=8856, Invalid=14706, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 18:56:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-05-02 18:56:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-05-02 18:56:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.1182266009852218) internal successors, (227), 203 states have internal predecessors, (227), 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 18:56:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 231 transitions. [2021-05-02 18:56:01,522 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 231 transitions. Word has length 205 [2021-05-02 18:56:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:01,522 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 231 transitions. [2021-05-02 18:56:01,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.0632911392405062) internal successors, (163), 78 states have internal predecessors, (163), 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 18:56:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 231 transitions. [2021-05-02 18:56:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 18:56:01,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:01,523 INFO L523 BasicCegarLoop]: trace histogram [98, 75, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:01,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:01,724 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1480018805, now seen corresponding path program 72 times [2021-05-02 18:56:01,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:01,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185029899] [2021-05-02 18:56:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 3420 proven. 5700 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-05-02 18:56:04,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:04,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185029899] [2021-05-02 18:56:04,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185029899] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:04,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774998464] [2021-05-02 18:56:04,083 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 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 18:56:04,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-05-02 18:56:04,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:04,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 18:56:04,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:04,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:04,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:05,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:06,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:06,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:06,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 3525 proven. 529 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2021-05-02 18:56:06,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774998464] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:06,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:06,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 26] total 103 [2021-05-02 18:56:06,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111180837] [2021-05-02 18:56:06,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 18:56:06,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:06,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 18:56:06,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 18:56:06,169 INFO L87 Difference]: Start difference. First operand 208 states and 231 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 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 18:56:13,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:13,238 INFO L93 Difference]: Finished difference Result 213 states and 238 transitions. [2021-05-02 18:56:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 18:56:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 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 207 [2021-05-02 18:56:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:13,239 INFO L225 Difference]: With dead ends: 213 [2021-05-02 18:56:13,239 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 18:56:13,240 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5025 ImplicationChecksByTransitivity, 10381.3ms TimeCoverageRelationStatistics Valid=15453, Invalid=25553, Unknown=0, NotChecked=0, Total=41006 [2021-05-02 18:56:13,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 18:56:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-05-02 18:56:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.1207729468599035) internal successors, (232), 207 states have internal predecessors, (232), 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 18:56:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2021-05-02 18:56:13,242 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 207 [2021-05-02 18:56:13,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:13,243 INFO L480 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2021-05-02 18:56:13,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 102 states have internal predecessors, (213), 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 18:56:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2021-05-02 18:56:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 18:56:13,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:13,243 INFO L523 BasicCegarLoop]: trace histogram [100, 76, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:13,456 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:13,457 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:13,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1373949722, now seen corresponding path program 73 times [2021-05-02 18:56:13,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:13,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486131686] [2021-05-02 18:56:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:15,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:56:15,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:15,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486131686] [2021-05-02 18:56:15,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486131686] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:15,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56631641] [2021-05-02 18:56:15,799 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 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 18:56:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 18:56:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:15,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 3619 proven. 5852 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:56:16,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56631641] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:16,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:16,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 81 [2021-05-02 18:56:16,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365257081] [2021-05-02 18:56:16,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 18:56:16,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:16,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 18:56:16,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3162, Invalid=3318, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 18:56:16,231 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 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 18:56:21,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:21,027 INFO L93 Difference]: Finished difference Result 214 states and 238 transitions. [2021-05-02 18:56:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 18:56:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 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 211 [2021-05-02 18:56:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:21,028 INFO L225 Difference]: With dead ends: 214 [2021-05-02 18:56:21,028 INFO L226 Difference]: Without dead ends: 214 [2021-05-02 18:56:21,029 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3227 ImplicationChecksByTransitivity, 6695.3ms TimeCoverageRelationStatistics Valid=9323, Invalid=15483, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 18:56:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-05-02 18:56:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-05-02 18:56:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.1196172248803828) internal successors, (234), 209 states have internal predecessors, (234), 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 18:56:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2021-05-02 18:56:21,031 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 211 [2021-05-02 18:56:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:21,031 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2021-05-02 18:56:21,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.0617283950617282) internal successors, (167), 80 states have internal predecessors, (167), 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 18:56:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2021-05-02 18:56:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 18:56:21,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:21,032 INFO L523 BasicCegarLoop]: trace histogram [101, 77, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:21,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-05-02 18:56:21,245 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:21,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1309692252, now seen corresponding path program 74 times [2021-05-02 18:56:21,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:21,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403513396] [2021-05-02 18:56:21,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:23,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:56:23,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:23,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403513396] [2021-05-02 18:56:23,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403513396] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:23,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801900410] [2021-05-02 18:56:23,924 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 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 18:56:23,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:56:23,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:23,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 18:56:23,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 3666 proven. 6006 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:56:24,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801900410] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:24,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:24,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 18:56:24,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943301480] [2021-05-02 18:56:24,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 18:56:24,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 18:56:24,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3242, Invalid=3400, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 18:56:24,452 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 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 18:56:29,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:29,458 INFO L93 Difference]: Finished difference Result 216 states and 240 transitions. [2021-05-02 18:56:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 18:56:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 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 213 [2021-05-02 18:56:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:29,459 INFO L225 Difference]: With dead ends: 216 [2021-05-02 18:56:29,459 INFO L226 Difference]: Without dead ends: 216 [2021-05-02 18:56:29,460 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3308 ImplicationChecksByTransitivity, 7179.7ms TimeCoverageRelationStatistics Valid=9561, Invalid=15879, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 18:56:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-05-02 18:56:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-05-02 18:56:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1184834123222749) internal successors, (236), 211 states have internal predecessors, (236), 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 18:56:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 240 transitions. [2021-05-02 18:56:29,462 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 240 transitions. Word has length 213 [2021-05-02 18:56:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:29,462 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 240 transitions. [2021-05-02 18:56:29,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.0609756097560976) internal successors, (169), 81 states have internal predecessors, (169), 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 18:56:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 240 transitions. [2021-05-02 18:56:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 18:56:29,463 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:29,463 INFO L523 BasicCegarLoop]: trace histogram [102, 78, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:29,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:29,678 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:29,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:29,678 INFO L82 PathProgramCache]: Analyzing trace with hash 312194274, now seen corresponding path program 75 times [2021-05-02 18:56:29,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:29,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992102329] [2021-05-02 18:56:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 3713 proven. 6162 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2021-05-02 18:56:32,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:32,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992102329] [2021-05-02 18:56:32,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992102329] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:32,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348722924] [2021-05-02 18:56:32,322 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 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 18:56:32,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2021-05-02 18:56:32,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:32,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 18:56:32,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:32,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:32,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 3822 proven. 576 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-05-02 18:56:34,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348722924] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:34,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:34,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 27] total 107 [2021-05-02 18:56:34,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380586315] [2021-05-02 18:56:34,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 18:56:34,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 18:56:34,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5567, Invalid=5775, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 18:56:34,595 INFO L87 Difference]: Start difference. First operand 216 states and 240 transitions. Second operand has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 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 18:56:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:42,477 INFO L93 Difference]: Finished difference Result 221 states and 247 transitions. [2021-05-02 18:56:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 18:56:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 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 215 [2021-05-02 18:56:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:42,478 INFO L225 Difference]: With dead ends: 221 [2021-05-02 18:56:42,478 INFO L226 Difference]: Without dead ends: 221 [2021-05-02 18:56:42,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5434 ImplicationChecksByTransitivity, 11693.6ms TimeCoverageRelationStatistics Valid=16695, Invalid=27615, Unknown=0, NotChecked=0, Total=44310 [2021-05-02 18:56:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-05-02 18:56:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-05-02 18:56:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1209302325581396) internal successors, (241), 215 states have internal predecessors, (241), 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 18:56:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 245 transitions. [2021-05-02 18:56:42,481 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 245 transitions. Word has length 215 [2021-05-02 18:56:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:42,481 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 245 transitions. [2021-05-02 18:56:42,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 106 states have internal predecessors, (221), 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 18:56:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 245 transitions. [2021-05-02 18:56:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 18:56:42,482 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:42,482 INFO L523 BasicCegarLoop]: trace histogram [104, 79, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:42,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:42,683 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:42,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:42,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1793238659, now seen corresponding path program 76 times [2021-05-02 18:56:42,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:42,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543005494] [2021-05-02 18:56:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:45,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:56:45,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:45,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543005494] [2021-05-02 18:56:45,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543005494] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:45,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960942065] [2021-05-02 18:56:45,442 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 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 18:56:45,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:56:45,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:45,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 18:56:45,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:45,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 3920 proven. 6320 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:56:45,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960942065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:45,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:45,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 18:56:45,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358375223] [2021-05-02 18:56:45,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 18:56:45,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:45,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 18:56:45,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3405, Invalid=3567, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 18:56:45,942 INFO L87 Difference]: Start difference. First operand 220 states and 245 transitions. Second operand has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 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 18:56:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:51,048 INFO L93 Difference]: Finished difference Result 222 states and 247 transitions. [2021-05-02 18:56:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 18:56:51,048 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 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 219 [2021-05-02 18:56:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:51,049 INFO L225 Difference]: With dead ends: 222 [2021-05-02 18:56:51,049 INFO L226 Difference]: Without dead ends: 222 [2021-05-02 18:56:51,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3473 ImplicationChecksByTransitivity, 7351.0ms TimeCoverageRelationStatistics Valid=10046, Invalid=16686, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 18:56:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-02 18:56:51,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-05-02 18:56:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.119815668202765) internal successors, (243), 217 states have internal predecessors, (243), 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 18:56:51,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2021-05-02 18:56:51,052 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 219 [2021-05-02 18:56:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:51,052 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2021-05-02 18:56:51,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0595238095238093) internal successors, (173), 83 states have internal predecessors, (173), 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 18:56:51,052 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2021-05-02 18:56:51,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 18:56:51,053 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:51,053 INFO L523 BasicCegarLoop]: trace histogram [105, 80, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:51,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 18:56:51,269 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:51,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:51,270 INFO L82 PathProgramCache]: Analyzing trace with hash -101762757, now seen corresponding path program 77 times [2021-05-02 18:56:51,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:51,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258944232] [2021-05-02 18:56:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:56:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:56:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:56:54,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:56:54,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258944232] [2021-05-02 18:56:54,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258944232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:54,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105331425] [2021-05-02 18:56:54,142 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 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 18:56:54,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 106 check-sat command(s) [2021-05-02 18:56:54,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:56:54,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 18:56:54,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:56:54,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:56:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 11025 backedges. 3969 proven. 6480 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:56:54,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105331425] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:56:54,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:56:54,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 85 [2021-05-02 18:56:54,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837408436] [2021-05-02 18:56:54,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 18:56:54,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:56:54,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 18:56:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3488, Invalid=3652, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 18:56:54,677 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 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 18:56:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:56:59,529 INFO L93 Difference]: Finished difference Result 224 states and 249 transitions. [2021-05-02 18:56:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 18:56:59,530 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 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 221 [2021-05-02 18:56:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:56:59,530 INFO L225 Difference]: With dead ends: 224 [2021-05-02 18:56:59,530 INFO L226 Difference]: Without dead ends: 224 [2021-05-02 18:56:59,531 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 7268.4ms TimeCoverageRelationStatistics Valid=10293, Invalid=17097, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 18:56:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-05-02 18:56:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-05-02 18:56:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 219 states have (on average 1.1187214611872147) internal successors, (245), 219 states have internal predecessors, (245), 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 18:56:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 249 transitions. [2021-05-02 18:56:59,533 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 249 transitions. Word has length 221 [2021-05-02 18:56:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:56:59,533 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 249 transitions. [2021-05-02 18:56:59,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0588235294117645) internal successors, (175), 84 states have internal predecessors, (175), 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 18:56:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 249 transitions. [2021-05-02 18:56:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 18:56:59,534 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:56:59,534 INFO L523 BasicCegarLoop]: trace histogram [106, 81, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:56:59,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:56:59,751 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:56:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:56:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1908941177, now seen corresponding path program 78 times [2021-05-02 18:56:59,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:56:59,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737607081] [2021-05-02 18:56:59,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:56:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:02,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 4018 proven. 6642 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2021-05-02 18:57:02,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:02,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737607081] [2021-05-02 18:57:02,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737607081] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:02,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322584028] [2021-05-02 18:57:02,454 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 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 18:57:02,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2021-05-02 18:57:02,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:02,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 18:57:02,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:02,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:03,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 4131 proven. 625 refuted. 0 times theorem prover too weak. 6480 trivial. 0 not checked. [2021-05-02 18:57:04,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322584028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:04,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:04,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 28] total 111 [2021-05-02 18:57:04,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384407153] [2021-05-02 18:57:04,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 18:57:04,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 18:57:04,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5997, Invalid=6213, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 18:57:04,992 INFO L87 Difference]: Start difference. First operand 224 states and 249 transitions. Second operand has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 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 18:57:13,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:13,779 INFO L93 Difference]: Finished difference Result 229 states and 256 transitions. [2021-05-02 18:57:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 18:57:13,779 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 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 223 [2021-05-02 18:57:13,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:13,780 INFO L225 Difference]: With dead ends: 229 [2021-05-02 18:57:13,780 INFO L226 Difference]: Without dead ends: 229 [2021-05-02 18:57:13,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5859 ImplicationChecksByTransitivity, 12811.3ms TimeCoverageRelationStatistics Valid=17985, Invalid=29757, Unknown=0, NotChecked=0, Total=47742 [2021-05-02 18:57:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-05-02 18:57:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-05-02 18:57:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 223 states have internal predecessors, (250), 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 18:57:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 254 transitions. [2021-05-02 18:57:13,784 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 254 transitions. Word has length 223 [2021-05-02 18:57:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:13,784 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 254 transitions. [2021-05-02 18:57:13,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.063063063063063) internal successors, (229), 110 states have internal predecessors, (229), 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 18:57:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 254 transitions. [2021-05-02 18:57:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 18:57:13,785 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:13,785 INFO L523 BasicCegarLoop]: trace histogram [108, 82, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:13,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:13,985 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash -322118060, now seen corresponding path program 79 times [2021-05-02 18:57:13,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:13,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574577497] [2021-05-02 18:57:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:57:17,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:17,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574577497] [2021-05-02 18:57:17,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574577497] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:17,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456646354] [2021-05-02 18:57:17,106 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 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 18:57:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:17,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 18:57:17,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:17,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 4233 proven. 6806 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:57:17,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456646354] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:17,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:17,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 87 [2021-05-02 18:57:17,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651874547] [2021-05-02 18:57:17,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 18:57:17,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:17,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 18:57:17,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3657, Invalid=3825, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 18:57:17,678 INFO L87 Difference]: Start difference. First operand 228 states and 254 transitions. Second operand has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 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 18:57:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:23,298 INFO L93 Difference]: Finished difference Result 230 states and 256 transitions. [2021-05-02 18:57:23,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 18:57:23,299 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 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 227 [2021-05-02 18:57:23,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:23,299 INFO L225 Difference]: With dead ends: 230 [2021-05-02 18:57:23,299 INFO L226 Difference]: Without dead ends: 230 [2021-05-02 18:57:23,300 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 8186.8ms TimeCoverageRelationStatistics Valid=10796, Invalid=17934, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 18:57:23,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-05-02 18:57:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-05-02 18:57:23,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.12) internal successors, (252), 225 states have internal predecessors, (252), 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 18:57:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 256 transitions. [2021-05-02 18:57:23,302 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 256 transitions. Word has length 227 [2021-05-02 18:57:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:23,302 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 256 transitions. [2021-05-02 18:57:23,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.057471264367816) internal successors, (179), 86 states have internal predecessors, (179), 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 18:57:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 256 transitions. [2021-05-02 18:57:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 18:57:23,303 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:23,303 INFO L523 BasicCegarLoop]: trace histogram [109, 83, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:23,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:23,504 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:23,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1743118318, now seen corresponding path program 80 times [2021-05-02 18:57:23,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:23,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705792235] [2021-05-02 18:57:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:57:26,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:26,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705792235] [2021-05-02 18:57:26,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705792235] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:26,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300368609] [2021-05-02 18:57:26,778 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 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 18:57:26,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:57:26,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:26,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 18:57:26,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:26,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 11881 backedges. 4284 proven. 6972 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:57:27,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300368609] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:27,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:27,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:57:27,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867235611] [2021-05-02 18:57:27,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:57:27,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:27,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:57:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3743, Invalid=3913, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:57:27,367 INFO L87 Difference]: Start difference. First operand 230 states and 256 transitions. Second operand has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 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 18:57:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:33,171 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2021-05-02 18:57:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:57:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 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 229 [2021-05-02 18:57:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:33,173 INFO L225 Difference]: With dead ends: 232 [2021-05-02 18:57:33,173 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 18:57:33,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3815 ImplicationChecksByTransitivity, 8534.6ms TimeCoverageRelationStatistics Valid=11052, Invalid=18360, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:57:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 18:57:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-05-02 18:57:33,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 227 states have (on average 1.118942731277533) internal successors, (254), 227 states have internal predecessors, (254), 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 18:57:33,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 258 transitions. [2021-05-02 18:57:33,176 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 258 transitions. Word has length 229 [2021-05-02 18:57:33,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:33,176 INFO L480 AbstractCegarLoop]: Abstraction has 232 states and 258 transitions. [2021-05-02 18:57:33,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0568181818181817) internal successors, (181), 87 states have internal predecessors, (181), 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 18:57:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 258 transitions. [2021-05-02 18:57:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 18:57:33,177 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:33,177 INFO L523 BasicCegarLoop]: trace histogram [110, 84, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:33,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:33,377 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:33,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1524766128, now seen corresponding path program 81 times [2021-05-02 18:57:33,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:33,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069829737] [2021-05-02 18:57:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:36,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:36,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 4335 proven. 7140 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-05-02 18:57:36,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:36,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069829737] [2021-05-02 18:57:36,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069829737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:36,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845097724] [2021-05-02 18:57:36,404 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 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 18:57:36,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2021-05-02 18:57:36,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2021-05-02 18:57:36,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:37,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 4452 proven. 676 refuted. 0 times theorem prover too weak. 6972 trivial. 0 not checked. [2021-05-02 18:57:39,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845097724] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:39,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:39,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 29] total 115 [2021-05-02 18:57:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573293939] [2021-05-02 18:57:39,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 18:57:39,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 18:57:39,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6443, Invalid=6667, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 18:57:39,358 INFO L87 Difference]: Start difference. First operand 232 states and 258 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 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 18:57:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:49,044 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2021-05-02 18:57:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-05-02 18:57:49,045 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 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 231 [2021-05-02 18:57:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:49,045 INFO L225 Difference]: With dead ends: 237 [2021-05-02 18:57:49,045 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 18:57:49,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6300 ImplicationChecksByTransitivity, 14346.9ms TimeCoverageRelationStatistics Valid=19323, Invalid=31979, Unknown=0, NotChecked=0, Total=51302 [2021-05-02 18:57:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 18:57:49,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-05-02 18:57:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 231 states have (on average 1.121212121212121) internal successors, (259), 231 states have internal predecessors, (259), 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 18:57:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 263 transitions. [2021-05-02 18:57:49,049 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 263 transitions. Word has length 231 [2021-05-02 18:57:49,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:49,049 INFO L480 AbstractCegarLoop]: Abstraction has 236 states and 263 transitions. [2021-05-02 18:57:49,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 114 states have internal predecessors, (237), 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 18:57:49,049 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 263 transitions. [2021-05-02 18:57:49,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 18:57:49,050 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:49,050 INFO L523 BasicCegarLoop]: trace histogram [112, 85, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:57:49,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:57:49,265 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:57:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:57:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash 45985643, now seen corresponding path program 82 times [2021-05-02 18:57:49,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:57:49,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024675491] [2021-05-02 18:57:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:57:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:57:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:57:52,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:57:52,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:57:52,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024675491] [2021-05-02 18:57:52,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024675491] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:52,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563529030] [2021-05-02 18:57:52,721 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 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 18:57:52,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:57:52,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:57:52,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 18:57:52,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:57:52,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:52,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:57:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 4558 proven. 7310 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:57:53,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563529030] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:57:53,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:57:53,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:57:53,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304316721] [2021-05-02 18:57:53,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:57:53,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:57:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:57:53,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3918, Invalid=4092, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:57:53,316 INFO L87 Difference]: Start difference. First operand 236 states and 263 transitions. Second operand has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 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 18:57:59,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:57:59,840 INFO L93 Difference]: Finished difference Result 238 states and 265 transitions. [2021-05-02 18:57:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:57:59,841 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 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 235 [2021-05-02 18:57:59,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:57:59,843 INFO L225 Difference]: With dead ends: 238 [2021-05-02 18:57:59,843 INFO L226 Difference]: Without dead ends: 238 [2021-05-02 18:57:59,844 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 9364.4ms TimeCoverageRelationStatistics Valid=11573, Invalid=19227, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:57:59,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-05-02 18:57:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2021-05-02 18:57:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 233 states have (on average 1.1201716738197425) internal successors, (261), 233 states have internal predecessors, (261), 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 18:57:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 265 transitions. [2021-05-02 18:57:59,846 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 265 transitions. Word has length 235 [2021-05-02 18:57:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:57:59,847 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 265 transitions. [2021-05-02 18:57:59,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 2.0555555555555554) internal successors, (185), 89 states have internal predecessors, (185), 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 18:57:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 265 transitions. [2021-05-02 18:57:59,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-05-02 18:57:59,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:57:59,848 INFO L523 BasicCegarLoop]: trace histogram [113, 86, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:00,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:00,065 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash 2080658217, now seen corresponding path program 83 times [2021-05-02 18:58:00,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:00,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172485578] [2021-05-02 18:58:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:58:03,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:03,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172485578] [2021-05-02 18:58:03,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172485578] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:03,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835025912] [2021-05-02 18:58:03,704 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 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 18:58:03,829 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2021-05-02 18:58:03,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:03,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 88 conjunts are in the unsatisfiable core [2021-05-02 18:58:03,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:03,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:03,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12769 backedges. 4611 proven. 7482 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:58:04,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835025912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:04,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:04,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 91 [2021-05-02 18:58:04,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412816634] [2021-05-02 18:58:04,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 18:58:04,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:04,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 18:58:04,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4007, Invalid=4183, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 18:58:04,358 INFO L87 Difference]: Start difference. First operand 238 states and 265 transitions. Second operand has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 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 18:58:10,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:10,779 INFO L93 Difference]: Finished difference Result 240 states and 267 transitions. [2021-05-02 18:58:10,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 18:58:10,780 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 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 237 [2021-05-02 18:58:10,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:10,780 INFO L225 Difference]: With dead ends: 240 [2021-05-02 18:58:10,780 INFO L226 Difference]: Without dead ends: 240 [2021-05-02 18:58:10,781 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 9532.3ms TimeCoverageRelationStatistics Valid=11838, Invalid=19668, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 18:58:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-05-02 18:58:10,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-05-02 18:58:10,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.1191489361702127) internal successors, (263), 235 states have internal predecessors, (263), 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 18:58:10,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 267 transitions. [2021-05-02 18:58:10,783 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 267 transitions. Word has length 237 [2021-05-02 18:58:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:10,783 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 267 transitions. [2021-05-02 18:58:10,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.0549450549450547) internal successors, (187), 90 states have internal predecessors, (187), 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 18:58:10,784 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 267 transitions. [2021-05-02 18:58:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 18:58:10,784 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:10,784 INFO L523 BasicCegarLoop]: trace histogram [114, 87, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:10,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-05-02 18:58:10,985 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:10,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1104085145, now seen corresponding path program 84 times [2021-05-02 18:58:10,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:10,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069718172] [2021-05-02 18:58:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:14,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 4664 proven. 7656 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2021-05-02 18:58:14,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:14,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069718172] [2021-05-02 18:58:14,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069718172] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:14,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124990402] [2021-05-02 18:58:14,877 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 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 18:58:15,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 111 check-sat command(s) [2021-05-02 18:58:15,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:15,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 18:58:15,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:15,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:16,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:17,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 4785 proven. 729 refuted. 0 times theorem prover too weak. 7482 trivial. 0 not checked. [2021-05-02 18:58:18,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124990402] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:18,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:18,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 30] total 119 [2021-05-02 18:58:18,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217121444] [2021-05-02 18:58:18,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2021-05-02 18:58:18,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:18,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-05-02 18:58:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6905, Invalid=7137, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 18:58:18,251 INFO L87 Difference]: Start difference. First operand 240 states and 267 transitions. Second operand has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 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 18:58:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:29,795 INFO L93 Difference]: Finished difference Result 245 states and 274 transitions. [2021-05-02 18:58:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-05-02 18:58:29,796 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 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 239 [2021-05-02 18:58:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:29,797 INFO L225 Difference]: With dead ends: 245 [2021-05-02 18:58:29,797 INFO L226 Difference]: Without dead ends: 245 [2021-05-02 18:58:29,798 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6757 ImplicationChecksByTransitivity, 17276.8ms TimeCoverageRelationStatistics Valid=20709, Invalid=34281, Unknown=0, NotChecked=0, Total=54990 [2021-05-02 18:58:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-05-02 18:58:29,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-05-02 18:58:29,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 239 states have (on average 1.1213389121338913) internal successors, (268), 239 states have internal predecessors, (268), 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 18:58:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 272 transitions. [2021-05-02 18:58:29,800 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 272 transitions. Word has length 239 [2021-05-02 18:58:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:29,801 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 272 transitions. [2021-05-02 18:58:29,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 119 states, 119 states have (on average 2.0588235294117645) internal successors, (245), 118 states have internal predecessors, (245), 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 18:58:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 272 transitions. [2021-05-02 18:58:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-05-02 18:58:29,801 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:29,802 INFO L523 BasicCegarLoop]: trace histogram [116, 88, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:30,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:58:30,002 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:30,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:30,003 INFO L82 PathProgramCache]: Analyzing trace with hash -179847998, now seen corresponding path program 85 times [2021-05-02 18:58:30,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:30,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048146323] [2021-05-02 18:58:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:33,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:33,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:58:33,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:33,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048146323] [2021-05-02 18:58:33,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048146323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:33,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122116347] [2021-05-02 18:58:33,771 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 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 18:58:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:33,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 18:58:33,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:33,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:33,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 4895 proven. 7832 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:58:34,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122116347] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:34,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:34,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 93 [2021-05-02 18:58:34,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987398334] [2021-05-02 18:58:34,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 18:58:34,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:34,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 18:58:34,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4188, Invalid=4368, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 18:58:34,426 INFO L87 Difference]: Start difference. First operand 244 states and 272 transitions. Second operand has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 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 18:58:41,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:41,572 INFO L93 Difference]: Finished difference Result 246 states and 274 transitions. [2021-05-02 18:58:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 18:58:41,572 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 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 243 [2021-05-02 18:58:41,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:41,573 INFO L225 Difference]: With dead ends: 246 [2021-05-02 18:58:41,573 INFO L226 Difference]: Without dead ends: 246 [2021-05-02 18:58:41,574 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4265 ImplicationChecksByTransitivity, 10389.3ms TimeCoverageRelationStatistics Valid=12377, Invalid=20565, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 18:58:41,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-05-02 18:58:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-05-02 18:58:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 241 states have (on average 1.120331950207469) internal successors, (270), 241 states have internal predecessors, (270), 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 18:58:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 274 transitions. [2021-05-02 18:58:41,576 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 274 transitions. Word has length 243 [2021-05-02 18:58:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:41,576 INFO L480 AbstractCegarLoop]: Abstraction has 246 states and 274 transitions. [2021-05-02 18:58:41,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.053763440860215) internal successors, (191), 92 states have internal predecessors, (191), 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 18:58:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 274 transitions. [2021-05-02 18:58:41,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 18:58:41,577 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:41,577 INFO L523 BasicCegarLoop]: trace histogram [117, 89, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:41,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 18:58:41,793 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:41,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1711653504, now seen corresponding path program 86 times [2021-05-02 18:58:41,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:41,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312816610] [2021-05-02 18:58:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:46,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:46,488 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:58:46,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:46,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312816610] [2021-05-02 18:58:46,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312816610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:46,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596742178] [2021-05-02 18:58:46,489 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 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 18:58:46,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:58:46,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 18:58:46,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:46,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:47,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13689 backedges. 4950 proven. 8010 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:58:47,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596742178] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:47,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:58:47,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:58:47,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093390525] [2021-05-02 18:58:47,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:58:47,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:58:47,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:58:47,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4280, Invalid=4462, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:58:47,212 INFO L87 Difference]: Start difference. First operand 246 states and 274 transitions. Second operand has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 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 18:58:54,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:58:54,592 INFO L93 Difference]: Finished difference Result 248 states and 276 transitions. [2021-05-02 18:58:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:58:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 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 245 [2021-05-02 18:58:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:58:54,593 INFO L225 Difference]: With dead ends: 248 [2021-05-02 18:58:54,593 INFO L226 Difference]: Without dead ends: 248 [2021-05-02 18:58:54,594 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 11570.0ms TimeCoverageRelationStatistics Valid=12651, Invalid=21021, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:58:54,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-05-02 18:58:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2021-05-02 18:58:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 243 states have (on average 1.1193415637860082) internal successors, (272), 243 states have internal predecessors, (272), 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 18:58:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 276 transitions. [2021-05-02 18:58:54,596 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 276 transitions. Word has length 245 [2021-05-02 18:58:54,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:58:54,596 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 276 transitions. [2021-05-02 18:58:54,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0531914893617023) internal successors, (193), 93 states have internal predecessors, (193), 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 18:58:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 276 transitions. [2021-05-02 18:58:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-05-02 18:58:54,597 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:58:54,597 INFO L523 BasicCegarLoop]: trace histogram [118, 90, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:58:54,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-02 18:58:54,798 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:58:54,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:58:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1621536578, now seen corresponding path program 87 times [2021-05-02 18:58:54,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:58:54,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793176333] [2021-05-02 18:58:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:58:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:59,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:58:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:58:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 5005 proven. 8190 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-05-02 18:58:59,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:58:59,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793176333] [2021-05-02 18:58:59,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793176333] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:58:59,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455908758] [2021-05-02 18:58:59,223 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 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 18:58:59,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 18:58:59,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:58:59,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 18:58:59,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:58:59,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:58:59,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:00,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:01,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 5130 proven. 784 refuted. 0 times theorem prover too weak. 8010 trivial. 0 not checked. [2021-05-02 18:59:03,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455908758] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:03,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:03,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 31] total 123 [2021-05-02 18:59:03,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758258325] [2021-05-02 18:59:03,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 123 states [2021-05-02 18:59:03,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-05-02 18:59:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7383, Invalid=7623, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 18:59:03,364 INFO L87 Difference]: Start difference. First operand 248 states and 276 transitions. Second operand has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 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 18:59:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:15,317 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2021-05-02 18:59:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-05-02 18:59:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 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 247 [2021-05-02 18:59:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:15,319 INFO L225 Difference]: With dead ends: 253 [2021-05-02 18:59:15,319 INFO L226 Difference]: Without dead ends: 253 [2021-05-02 18:59:15,321 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7230 ImplicationChecksByTransitivity, 18940.2ms TimeCoverageRelationStatistics Valid=22143, Invalid=36663, Unknown=0, NotChecked=0, Total=58806 [2021-05-02 18:59:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-05-02 18:59:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-05-02 18:59:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 247 states have (on average 1.1214574898785425) internal successors, (277), 247 states have internal predecessors, (277), 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 18:59:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2021-05-02 18:59:15,323 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 247 [2021-05-02 18:59:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:15,323 INFO L480 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2021-05-02 18:59:15,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 123 states, 123 states have (on average 2.0569105691056913) internal successors, (253), 122 states have internal predecessors, (253), 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 18:59:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2021-05-02 18:59:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 18:59:15,324 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:15,324 INFO L523 BasicCegarLoop]: trace histogram [120, 91, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:15,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:15,524 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1836648871, now seen corresponding path program 88 times [2021-05-02 18:59:15,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:15,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692908949] [2021-05-02 18:59:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:59:19,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692908949] [2021-05-02 18:59:19,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692908949] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:19,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131262977] [2021-05-02 18:59:19,546 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 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 18:59:19,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:59:19,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:19,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 18:59:19,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:19,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:19,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 5244 proven. 8372 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:59:20,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131262977] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:20,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:20,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:59:20,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21897499] [2021-05-02 18:59:20,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:59:20,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:20,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:59:20,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4467, Invalid=4653, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:59:20,347 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 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 18:59:29,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:29,254 INFO L93 Difference]: Finished difference Result 254 states and 283 transitions. [2021-05-02 18:59:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:59:29,255 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 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 251 [2021-05-02 18:59:29,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:29,256 INFO L225 Difference]: With dead ends: 254 [2021-05-02 18:59:29,256 INFO L226 Difference]: Without dead ends: 254 [2021-05-02 18:59:29,257 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 12267.8ms TimeCoverageRelationStatistics Valid=13208, Invalid=21948, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:59:29,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-05-02 18:59:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-05-02 18:59:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.1204819277108433) internal successors, (279), 249 states have internal predecessors, (279), 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 18:59:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 283 transitions. [2021-05-02 18:59:29,259 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 283 transitions. Word has length 251 [2021-05-02 18:59:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:29,259 INFO L480 AbstractCegarLoop]: Abstraction has 254 states and 283 transitions. [2021-05-02 18:59:29,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 2.0520833333333335) internal successors, (197), 95 states have internal predecessors, (197), 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 18:59:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 283 transitions. [2021-05-02 18:59:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-05-02 18:59:29,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:29,260 INFO L523 BasicCegarLoop]: trace histogram [121, 92, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:29,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:29,461 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:29,461 INFO L82 PathProgramCache]: Analyzing trace with hash -969253353, now seen corresponding path program 89 times [2021-05-02 18:59:29,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:29,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110078059] [2021-05-02 18:59:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:59:34,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:34,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110078059] [2021-05-02 18:59:34,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110078059] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:34,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492261525] [2021-05-02 18:59:34,075 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 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 18:59:34,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 122 check-sat command(s) [2021-05-02 18:59:34,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:34,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 94 conjunts are in the unsatisfiable core [2021-05-02 18:59:34,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:34,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14641 backedges. 5301 proven. 8556 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:59:34,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492261525] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:34,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:34,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 97 [2021-05-02 18:59:34,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446438062] [2021-05-02 18:59:34,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 18:59:34,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 18:59:34,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4562, Invalid=4750, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 18:59:34,972 INFO L87 Difference]: Start difference. First operand 254 states and 283 transitions. Second operand has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 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 18:59:43,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:59:43,997 INFO L93 Difference]: Finished difference Result 256 states and 285 transitions. [2021-05-02 18:59:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 18:59:43,998 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 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 253 [2021-05-02 18:59:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:59:43,999 INFO L225 Difference]: With dead ends: 256 [2021-05-02 18:59:43,999 INFO L226 Difference]: Without dead ends: 256 [2021-05-02 18:59:44,000 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4643 ImplicationChecksByTransitivity, 12957.5ms TimeCoverageRelationStatistics Valid=13491, Invalid=22419, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 18:59:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-05-02 18:59:44,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2021-05-02 18:59:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.1195219123505975) internal successors, (281), 251 states have internal predecessors, (281), 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 18:59:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 285 transitions. [2021-05-02 18:59:44,002 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 285 transitions. Word has length 253 [2021-05-02 18:59:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:59:44,002 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 285 transitions. [2021-05-02 18:59:44,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.051546391752577) internal successors, (199), 96 states have internal predecessors, (199), 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 18:59:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 285 transitions. [2021-05-02 18:59:44,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-05-02 18:59:44,003 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:59:44,003 INFO L523 BasicCegarLoop]: trace histogram [122, 93, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:59:44,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:59:44,204 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:59:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:59:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash -625815979, now seen corresponding path program 90 times [2021-05-02 18:59:44,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:59:44,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990869024] [2021-05-02 18:59:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:59:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:49,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:59:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:59:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 5358 proven. 8742 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2021-05-02 18:59:49,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:59:49,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990869024] [2021-05-02 18:59:49,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990869024] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:49,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577776397] [2021-05-02 18:59:49,267 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 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 18:59:49,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 119 check-sat command(s) [2021-05-02 18:59:49,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:59:49,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 18:59:49,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:59:49,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:49,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:49,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:49,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:50,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:51,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:52,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:53,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:54,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:54,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:59:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 5487 proven. 841 refuted. 0 times theorem prover too weak. 8556 trivial. 0 not checked. [2021-05-02 18:59:54,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577776397] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:59:54,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:59:54,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 32] total 127 [2021-05-02 18:59:54,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416667586] [2021-05-02 18:59:54,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 127 states [2021-05-02 18:59:54,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:59:54,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-05-02 18:59:54,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7877, Invalid=8125, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 18:59:54,227 INFO L87 Difference]: Start difference. First operand 256 states and 285 transitions. Second operand has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 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 19:00:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:11,619 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2021-05-02 19:00:11,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-05-02 19:00:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 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 255 [2021-05-02 19:00:11,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:11,621 INFO L225 Difference]: With dead ends: 261 [2021-05-02 19:00:11,621 INFO L226 Difference]: Without dead ends: 261 [2021-05-02 19:00:11,624 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7719 ImplicationChecksByTransitivity, 25243.6ms TimeCoverageRelationStatistics Valid=23625, Invalid=39125, Unknown=0, NotChecked=0, Total=62750 [2021-05-02 19:00:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-05-02 19:00:11,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-05-02 19:00:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.1215686274509804) internal successors, (286), 255 states have internal predecessors, (286), 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 19:00:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 290 transitions. [2021-05-02 19:00:11,626 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 290 transitions. Word has length 255 [2021-05-02 19:00:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:11,626 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 290 transitions. [2021-05-02 19:00:11,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 127 states, 127 states have (on average 2.0551181102362204) internal successors, (261), 126 states have internal predecessors, (261), 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 19:00:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 290 transitions. [2021-05-02 19:00:11,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-05-02 19:00:11,627 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:11,627 INFO L523 BasicCegarLoop]: trace histogram [124, 94, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:11,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2021-05-02 19:00:11,836 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:11,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2002471984, now seen corresponding path program 91 times [2021-05-02 19:00:11,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:11,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033923006] [2021-05-02 19:00:11,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:17,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 19:00:17,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:17,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033923006] [2021-05-02 19:00:17,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033923006] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:17,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632274622] [2021-05-02 19:00:17,688 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 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 19:00:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:17,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 19:00:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:17,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:17,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 5605 proven. 8930 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 19:00:18,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632274622] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:18,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:18,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 99 [2021-05-02 19:00:18,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87699744] [2021-05-02 19:00:18,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 19:00:18,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:18,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 19:00:18,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4755, Invalid=4947, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 19:00:18,425 INFO L87 Difference]: Start difference. First operand 260 states and 290 transitions. Second operand has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 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 19:00:27,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:27,614 INFO L93 Difference]: Finished difference Result 262 states and 292 transitions. [2021-05-02 19:00:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 19:00:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 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 259 [2021-05-02 19:00:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:27,615 INFO L225 Difference]: With dead ends: 262 [2021-05-02 19:00:27,615 INFO L226 Difference]: Without dead ends: 262 [2021-05-02 19:00:27,617 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 14472.0ms TimeCoverageRelationStatistics Valid=14066, Invalid=23376, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 19:00:27,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-02 19:00:27,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-05-02 19:00:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 257 states have (on average 1.1206225680933852) internal successors, (288), 257 states have internal predecessors, (288), 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 19:00:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 292 transitions. [2021-05-02 19:00:27,619 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 292 transitions. Word has length 259 [2021-05-02 19:00:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:27,619 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 292 transitions. [2021-05-02 19:00:27,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.0505050505050506) internal successors, (203), 98 states have internal predecessors, (203), 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 19:00:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 292 transitions. [2021-05-02 19:00:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-05-02 19:00:27,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:27,620 INFO L523 BasicCegarLoop]: trace histogram [125, 95, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:27,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:00:27,827 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash -612231698, now seen corresponding path program 92 times [2021-05-02 19:00:27,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:27,828 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386708076] [2021-05-02 19:00:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 19:00:32,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:32,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386708076] [2021-05-02 19:00:32,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386708076] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:32,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189668233] [2021-05-02 19:00:32,110 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 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 19:00:32,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:00:32,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:32,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 19:00:32,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15625 backedges. 5664 proven. 9120 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 19:00:32,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189668233] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:32,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:32,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 100 [2021-05-02 19:00:32,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970378211] [2021-05-02 19:00:32,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 19:00:32,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 19:00:32,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4853, Invalid=5047, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 19:00:32,764 INFO L87 Difference]: Start difference. First operand 262 states and 292 transitions. Second operand has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 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 19:00:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:00:43,798 INFO L93 Difference]: Finished difference Result 264 states and 294 transitions. [2021-05-02 19:00:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 19:00:43,799 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 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 261 [2021-05-02 19:00:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:00:43,800 INFO L225 Difference]: With dead ends: 264 [2021-05-02 19:00:43,800 INFO L226 Difference]: Without dead ends: 264 [2021-05-02 19:00:43,802 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4937 ImplicationChecksByTransitivity, 14642.8ms TimeCoverageRelationStatistics Valid=14358, Invalid=23862, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 19:00:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-05-02 19:00:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-05-02 19:00:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 259 states have (on average 1.1196911196911197) internal successors, (290), 259 states have internal predecessors, (290), 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 19:00:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 294 transitions. [2021-05-02 19:00:43,804 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 294 transitions. Word has length 261 [2021-05-02 19:00:43,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:00:43,804 INFO L480 AbstractCegarLoop]: Abstraction has 264 states and 294 transitions. [2021-05-02 19:00:43,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.05) internal successors, (205), 99 states have internal predecessors, (205), 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 19:00:43,804 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 294 transitions. [2021-05-02 19:00:43,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 19:00:43,805 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:00:43,805 INFO L523 BasicCegarLoop]: trace histogram [126, 96, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:00:44,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-05-02 19:00:44,006 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:00:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:00:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -786601940, now seen corresponding path program 93 times [2021-05-02 19:00:44,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:00:44,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083479378] [2021-05-02 19:00:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:00:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:00:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:00:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 5723 proven. 9312 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-05-02 19:00:50,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:00:50,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083479378] [2021-05-02 19:00:50,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083479378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:50,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863250306] [2021-05-02 19:00:50,363 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 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 19:00:50,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 62 check-sat command(s) [2021-05-02 19:00:50,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:00:50,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 19:00:50,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:00:50,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:50,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:51,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:52,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:53,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:54,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:55,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:56,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:56,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:56,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:56,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:00:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 5856 proven. 900 refuted. 0 times theorem prover too weak. 9120 trivial. 0 not checked. [2021-05-02 19:00:56,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863250306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:00:56,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:00:56,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 33] total 131 [2021-05-02 19:00:56,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953638649] [2021-05-02 19:00:56,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 131 states [2021-05-02 19:00:56,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:00:56,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-05-02 19:00:56,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8387, Invalid=8643, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 19:00:56,535 INFO L87 Difference]: Start difference. First operand 264 states and 294 transitions. Second operand has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 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 19:01:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:15,876 INFO L93 Difference]: Finished difference Result 269 states and 301 transitions. [2021-05-02 19:01:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-05-02 19:01:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 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 263 [2021-05-02 19:01:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:15,878 INFO L225 Difference]: With dead ends: 269 [2021-05-02 19:01:15,878 INFO L226 Difference]: Without dead ends: 269 [2021-05-02 19:01:15,881 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 257 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8224 ImplicationChecksByTransitivity, 29470.9ms TimeCoverageRelationStatistics Valid=25155, Invalid=41667, Unknown=0, NotChecked=0, Total=66822 [2021-05-02 19:01:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-05-02 19:01:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2021-05-02 19:01:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.1216730038022813) internal successors, (295), 263 states have internal predecessors, (295), 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 19:01:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 299 transitions. [2021-05-02 19:01:15,883 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 299 transitions. Word has length 263 [2021-05-02 19:01:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:15,883 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 299 transitions. [2021-05-02 19:01:15,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 131 states, 131 states have (on average 2.053435114503817) internal successors, (269), 130 states have internal predecessors, (269), 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 19:01:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 299 transitions. [2021-05-02 19:01:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-05-02 19:01:15,884 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:15,884 INFO L523 BasicCegarLoop]: trace histogram [128, 97, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:16,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:16,101 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1852354119, now seen corresponding path program 94 times [2021-05-02 19:01:16,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:16,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421360651] [2021-05-02 19:01:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:22,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 19:01:22,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:22,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421360651] [2021-05-02 19:01:22,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421360651] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:22,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531430599] [2021-05-02 19:01:22,127 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 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 19:01:22,212 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:01:22,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:22,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 19:01:22,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:22,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 5978 proven. 9506 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 19:01:22,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531430599] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:22,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:22,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 102 [2021-05-02 19:01:22,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058384183] [2021-05-02 19:01:22,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 19:01:22,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:22,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 19:01:22,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5052, Invalid=5250, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 19:01:22,854 INFO L87 Difference]: Start difference. First operand 268 states and 299 transitions. Second operand has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 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 19:01:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:32,156 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2021-05-02 19:01:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 19:01:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 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 267 [2021-05-02 19:01:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:32,158 INFO L225 Difference]: With dead ends: 270 [2021-05-02 19:01:32,158 INFO L226 Difference]: Without dead ends: 270 [2021-05-02 19:01:32,160 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5138 ImplicationChecksByTransitivity, 14639.2ms TimeCoverageRelationStatistics Valid=14951, Invalid=24849, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 19:01:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-05-02 19:01:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-05-02 19:01:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.120754716981132) internal successors, (297), 265 states have internal predecessors, (297), 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 19:01:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 301 transitions. [2021-05-02 19:01:32,162 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 301 transitions. Word has length 267 [2021-05-02 19:01:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:32,162 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 301 transitions. [2021-05-02 19:01:32,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.049019607843137) internal successors, (209), 101 states have internal predecessors, (209), 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 19:01:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 301 transitions. [2021-05-02 19:01:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 19:01:32,163 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:32,163 INFO L523 BasicCegarLoop]: trace histogram [129, 98, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:32,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:01:32,364 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash 310434309, now seen corresponding path program 95 times [2021-05-02 19:01:32,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:32,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88102886] [2021-05-02 19:01:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:39,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 19:01:39,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:39,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88102886] [2021-05-02 19:01:39,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88102886] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:39,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422226773] [2021-05-02 19:01:39,560 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 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 19:01:39,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 130 check-sat command(s) [2021-05-02 19:01:39,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:39,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 19:01:39,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:39,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:39,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16641 backedges. 6039 proven. 9702 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 19:01:40,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422226773] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:40,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:01:40,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 103 [2021-05-02 19:01:40,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292919356] [2021-05-02 19:01:40,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 19:01:40,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:01:40,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 19:01:40,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5153, Invalid=5353, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 19:01:40,354 INFO L87 Difference]: Start difference. First operand 270 states and 301 transitions. Second operand has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 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 19:01:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:01:51,358 INFO L93 Difference]: Finished difference Result 272 states and 303 transitions. [2021-05-02 19:01:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 19:01:51,359 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 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 269 [2021-05-02 19:01:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:01:51,360 INFO L225 Difference]: With dead ends: 272 [2021-05-02 19:01:51,360 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 19:01:51,361 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5240 ImplicationChecksByTransitivity, 17464.6ms TimeCoverageRelationStatistics Valid=15252, Invalid=25350, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 19:01:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 19:01:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-05-02 19:01:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.1198501872659177) internal successors, (299), 267 states have internal predecessors, (299), 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 19:01:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 303 transitions. [2021-05-02 19:01:51,363 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 303 transitions. Word has length 269 [2021-05-02 19:01:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:01:51,364 INFO L480 AbstractCegarLoop]: Abstraction has 272 states and 303 transitions. [2021-05-02 19:01:51,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0485436893203883) internal successors, (211), 102 states have internal predecessors, (211), 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 19:01:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 303 transitions. [2021-05-02 19:01:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-05-02 19:01:51,364 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:01:51,365 INFO L523 BasicCegarLoop]: trace histogram [130, 99, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:01:51,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-05-02 19:01:51,567 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:01:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:01:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 289214019, now seen corresponding path program 96 times [2021-05-02 19:01:51,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:01:51,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595512898] [2021-05-02 19:01:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:01:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:01:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:01:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 6100 proven. 9900 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 19:01:57,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:01:57,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595512898] [2021-05-02 19:01:57,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595512898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:01:57,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568636732] [2021-05-02 19:01:57,570 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 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 19:01:57,812 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2021-05-02 19:01:57,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:01:57,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 19:01:57,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:01:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:58,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:01:59,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:00,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:01,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:02,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:03,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 6237 proven. 961 refuted. 0 times theorem prover too weak. 9702 trivial. 0 not checked. [2021-05-02 19:02:04,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568636732] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:04,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:04,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 34] total 135 [2021-05-02 19:02:04,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135672854] [2021-05-02 19:02:04,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 135 states [2021-05-02 19:02:04,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-05-02 19:02:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8913, Invalid=9177, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 19:02:04,944 INFO L87 Difference]: Start difference. First operand 272 states and 303 transitions. Second operand has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 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 19:02:22,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:22,498 INFO L93 Difference]: Finished difference Result 277 states and 310 transitions. [2021-05-02 19:02:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-05-02 19:02:22,499 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 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 271 [2021-05-02 19:02:22,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:22,500 INFO L225 Difference]: With dead ends: 277 [2021-05-02 19:02:22,500 INFO L226 Difference]: Without dead ends: 277 [2021-05-02 19:02:22,502 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8745 ImplicationChecksByTransitivity, 28273.2ms TimeCoverageRelationStatistics Valid=26733, Invalid=44289, Unknown=0, NotChecked=0, Total=71022 [2021-05-02 19:02:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-02 19:02:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 276. [2021-05-02 19:02:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 271 states have (on average 1.121771217712177) internal successors, (304), 271 states have internal predecessors, (304), 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 19:02:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 308 transitions. [2021-05-02 19:02:22,504 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 308 transitions. Word has length 271 [2021-05-02 19:02:22,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:22,504 INFO L480 AbstractCegarLoop]: Abstraction has 276 states and 308 transitions. [2021-05-02 19:02:22,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 135 states, 135 states have (on average 2.051851851851852) internal successors, (277), 134 states have internal predecessors, (277), 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 19:02:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 308 transitions. [2021-05-02 19:02:22,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 19:02:22,506 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:22,506 INFO L523 BasicCegarLoop]: trace histogram [132, 100, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:22,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-05-02 19:02:22,720 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:22,720 INFO L82 PathProgramCache]: Analyzing trace with hash 253168798, now seen corresponding path program 97 times [2021-05-02 19:02:22,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:22,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12902900] [2021-05-02 19:02:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:30,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 19:02:30,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:30,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12902900] [2021-05-02 19:02:30,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12902900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:30,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779397697] [2021-05-02 19:02:30,010 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 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 19:02:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:30,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 19:02:30,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:30,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:31,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:31,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:31,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:31,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 6363 proven. 10100 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 19:02:31,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779397697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:31,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:31,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 105 [2021-05-02 19:02:31,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382390013] [2021-05-02 19:02:31,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 19:02:31,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:31,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 19:02:31,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5358, Invalid=5562, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 19:02:31,165 INFO L87 Difference]: Start difference. First operand 276 states and 308 transitions. Second operand has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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 19:02:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:02:43,548 INFO L93 Difference]: Finished difference Result 278 states and 310 transitions. [2021-05-02 19:02:43,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 19:02:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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 275 [2021-05-02 19:02:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:02:43,551 INFO L225 Difference]: With dead ends: 278 [2021-05-02 19:02:43,551 INFO L226 Difference]: Without dead ends: 278 [2021-05-02 19:02:43,552 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5447 ImplicationChecksByTransitivity, 18891.6ms TimeCoverageRelationStatistics Valid=15863, Invalid=26367, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 19:02:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-05-02 19:02:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-05-02 19:02:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 273 states have (on average 1.120879120879121) internal successors, (306), 273 states have internal predecessors, (306), 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 19:02:43,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 310 transitions. [2021-05-02 19:02:43,554 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 310 transitions. Word has length 275 [2021-05-02 19:02:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:02:43,555 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 310 transitions. [2021-05-02 19:02:43,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.0476190476190474) internal successors, (215), 104 states have internal predecessors, (215), 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 19:02:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 310 transitions. [2021-05-02 19:02:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-05-02 19:02:43,556 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:02:43,556 INFO L523 BasicCegarLoop]: trace histogram [133, 101, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:02:43,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:02:43,757 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:02:43,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:02:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1533109668, now seen corresponding path program 98 times [2021-05-02 19:02:43,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:02:43,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809586865] [2021-05-02 19:02:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:02:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:51,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:02:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:02:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 19:02:51,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:02:51,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809586865] [2021-05-02 19:02:51,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809586865] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:51,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873695051] [2021-05-02 19:02:51,604 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 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 19:02:51,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 19:02:51,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:02:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 19:02:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:02:51,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:51,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:02:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17689 backedges. 6426 proven. 10302 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 19:02:52,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873695051] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:02:52,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:02:52,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104] total 106 [2021-05-02 19:02:52,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287888008] [2021-05-02 19:02:52,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 19:02:52,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:02:52,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 19:02:52,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5462, Invalid=5668, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 19:02:52,921 INFO L87 Difference]: Start difference. First operand 278 states and 310 transitions. Second operand has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 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 19:03:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:06,864 INFO L93 Difference]: Finished difference Result 280 states and 312 transitions. [2021-05-02 19:03:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-02 19:03:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 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 277 [2021-05-02 19:03:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:06,867 INFO L225 Difference]: With dead ends: 280 [2021-05-02 19:03:06,867 INFO L226 Difference]: Without dead ends: 280 [2021-05-02 19:03:06,868 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5552 ImplicationChecksByTransitivity, 20829.0ms TimeCoverageRelationStatistics Valid=16173, Invalid=26883, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 19:03:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-05-02 19:03:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-05-02 19:03:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.12) internal successors, (308), 275 states have internal predecessors, (308), 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 19:03:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 312 transitions. [2021-05-02 19:03:06,871 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 312 transitions. Word has length 277 [2021-05-02 19:03:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:06,871 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 312 transitions. [2021-05-02 19:03:06,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.047169811320755) internal successors, (217), 105 states have internal predecessors, (217), 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 19:03:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 312 transitions. [2021-05-02 19:03:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-05-02 19:03:06,872 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:06,872 INFO L523 BasicCegarLoop]: trace histogram [134, 102, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:07,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-02 19:03:07,073 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash -159797094, now seen corresponding path program 99 times [2021-05-02 19:03:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:07,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817611488] [2021-05-02 19:03:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 6489 proven. 10506 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2021-05-02 19:03:15,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:15,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817611488] [2021-05-02 19:03:15,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817611488] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:15,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91555556] [2021-05-02 19:03:15,364 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 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 19:03:15,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2021-05-02 19:03:15,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:15,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 19:03:15,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:15,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:15,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:16,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:17,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:18,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:19,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:20,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:21,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:22,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:23,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:23,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 6630 proven. 1024 refuted. 0 times theorem prover too weak. 10302 trivial. 0 not checked. [2021-05-02 19:03:23,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91555556] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:23,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:23,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 35] total 139 [2021-05-02 19:03:23,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517669067] [2021-05-02 19:03:23,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2021-05-02 19:03:23,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:23,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-05-02 19:03:23,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9455, Invalid=9727, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 19:03:23,354 INFO L87 Difference]: Start difference. First operand 280 states and 312 transitions. Second operand has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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 19:03:45,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:03:45,458 INFO L93 Difference]: Finished difference Result 285 states and 319 transitions. [2021-05-02 19:03:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-05-02 19:03:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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 279 [2021-05-02 19:03:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:03:45,461 INFO L225 Difference]: With dead ends: 285 [2021-05-02 19:03:45,461 INFO L226 Difference]: Without dead ends: 285 [2021-05-02 19:03:45,463 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9282 ImplicationChecksByTransitivity, 35841.1ms TimeCoverageRelationStatistics Valid=28359, Invalid=46991, Unknown=0, NotChecked=0, Total=75350 [2021-05-02 19:03:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-05-02 19:03:45,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2021-05-02 19:03:45,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 279 states have (on average 1.1218637992831542) internal successors, (313), 279 states have internal predecessors, (313), 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 19:03:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 317 transitions. [2021-05-02 19:03:45,465 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 317 transitions. Word has length 279 [2021-05-02 19:03:45,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:03:45,466 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 317 transitions. [2021-05-02 19:03:45,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 139 states, 139 states have (on average 2.050359712230216) internal successors, (285), 138 states have internal predecessors, (285), 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 19:03:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 317 transitions. [2021-05-02 19:03:45,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-05-02 19:03:45,467 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:03:45,467 INFO L523 BasicCegarLoop]: trace histogram [136, 103, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:03:45,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 19:03:45,667 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:03:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:03:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1668131019, now seen corresponding path program 100 times [2021-05-02 19:03:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:03:45,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738056690] [2021-05-02 19:03:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:03:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:52,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:03:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:03:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 19:03:52,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:03:52,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738056690] [2021-05-02 19:03:52,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738056690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:52,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423121850] [2021-05-02 19:03:52,851 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 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 19:03:52,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 19:03:52,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:03:52,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 19:03:52,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:03:52,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:52,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:53,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:03:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 6760 proven. 10712 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 19:03:54,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423121850] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:03:54,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:03:54,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 108 [2021-05-02 19:03:54,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757233946] [2021-05-02 19:03:54,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 108 states [2021-05-02 19:03:54,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:03:54,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-05-02 19:03:54,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5673, Invalid=5883, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 19:03:54,013 INFO L87 Difference]: Start difference. First operand 284 states and 317 transitions. Second operand has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 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 19:04:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:06,434 INFO L93 Difference]: Finished difference Result 286 states and 319 transitions. [2021-05-02 19:04:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 19:04:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 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 283 [2021-05-02 19:04:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:06,437 INFO L225 Difference]: With dead ends: 286 [2021-05-02 19:04:06,437 INFO L226 Difference]: Without dead ends: 286 [2021-05-02 19:04:06,439 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5765 ImplicationChecksByTransitivity, 18647.8ms TimeCoverageRelationStatistics Valid=16802, Invalid=27930, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 19:04:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-05-02 19:04:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2021-05-02 19:04:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 281 states have (on average 1.1209964412811388) internal successors, (315), 281 states have internal predecessors, (315), 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 19:04:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2021-05-02 19:04:06,441 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 283 [2021-05-02 19:04:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:06,441 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2021-05-02 19:04:06,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 108 states, 108 states have (on average 2.0462962962962963) internal successors, (221), 107 states have internal predecessors, (221), 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 19:04:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2021-05-02 19:04:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-05-02 19:04:06,442 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:06,442 INFO L523 BasicCegarLoop]: trace histogram [137, 104, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:06,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 19:04:06,657 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1996965619, now seen corresponding path program 101 times [2021-05-02 19:04:06,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:06,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81062424] [2021-05-02 19:04:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 19:04:15,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:15,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81062424] [2021-05-02 19:04:15,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81062424] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:15,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871185130] [2021-05-02 19:04:15,280 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 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 19:04:15,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2021-05-02 19:04:15,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:04:15,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 106 conjunts are in the unsatisfiable core [2021-05-02 19:04:15,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:04:15,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:15,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18769 backedges. 6825 proven. 10920 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 19:04:16,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871185130] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:16,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:04:16,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 109 [2021-05-02 19:04:16,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146275624] [2021-05-02 19:04:16,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 19:04:16,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:16,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 19:04:16,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5780, Invalid=5992, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 19:04:16,720 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 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 19:04:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 19:04:32,185 INFO L93 Difference]: Finished difference Result 288 states and 321 transitions. [2021-05-02 19:04:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 19:04:32,187 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 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 285 [2021-05-02 19:04:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 19:04:32,188 INFO L225 Difference]: With dead ends: 288 [2021-05-02 19:04:32,188 INFO L226 Difference]: Without dead ends: 288 [2021-05-02 19:04:32,189 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5873 ImplicationChecksByTransitivity, 23123.9ms TimeCoverageRelationStatistics Valid=17121, Invalid=28461, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 19:04:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-05-02 19:04:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-05-02 19:04:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 283 states have (on average 1.1201413427561837) internal successors, (317), 283 states have internal predecessors, (317), 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 19:04:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 321 transitions. [2021-05-02 19:04:32,191 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 321 transitions. Word has length 285 [2021-05-02 19:04:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 19:04:32,192 INFO L480 AbstractCegarLoop]: Abstraction has 288 states and 321 transitions. [2021-05-02 19:04:32,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0458715596330275) internal successors, (223), 108 states have internal predecessors, (223), 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 19:04:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 321 transitions. [2021-05-02 19:04:32,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 19:04:32,193 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 19:04:32,193 INFO L523 BasicCegarLoop]: trace histogram [138, 105, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 19:04:32,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 19:04:32,394 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 19:04:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 19:04:32,394 INFO L82 PathProgramCache]: Analyzing trace with hash -2013315279, now seen corresponding path program 102 times [2021-05-02 19:04:32,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 19:04:32,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840069492] [2021-05-02 19:04:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 19:04:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 19:04:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 19:04:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 6890 proven. 11130 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2021-05-02 19:04:39,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 19:04:39,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840069492] [2021-05-02 19:04:39,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840069492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:39,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196496413] [2021-05-02 19:04:39,788 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 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 19:04:39,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 135 check-sat command(s) [2021-05-02 19:04:39,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 19:04:39,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 19:04:39,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 19:04:40,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:40,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:40,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:40,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:40,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:40,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:41,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:43,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:44,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:45,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 19:04:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 7035 proven. 1089 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2021-05-02 19:04:46,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196496413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 19:04:46,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 19:04:46,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 36] total 143 [2021-05-02 19:04:46,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31560244] [2021-05-02 19:04:46,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 143 states [2021-05-02 19:04:46,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 19:04:46,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-05-02 19:04:46,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10013, Invalid=10293, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 19:04:46,853 INFO L87 Difference]: Start difference. First operand 288 states and 321 transitions. Second operand has 143 states, 143 states have (on average 2.0489510489510487) internal successors, (293), 142 states have internal predecessors, (293), 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)