/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-acceleration/functions_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:52:09,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:52:09,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:52:09,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 17:52:09,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:52:09,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:52:09,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:52:09,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:52:09,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:52:09,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:52:09,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:52:09,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:52:09,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:52:09,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:52:09,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:52:09,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:52:09,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:52:09,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:52:09,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:52:09,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:52:09,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:52:09,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:52:09,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:52:09,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:52:09,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:52:09,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:52:09,914 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:52:09,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:52:10,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:52:10,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:52:10,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:52:10,160 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:52:10,168 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:52:10,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-02 17:52:10,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162929d02/654b64f719544a3aba5776950ab6772c/FLAGc0e85e94e [2021-05-02 17:52:10,578 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:52:10,578 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c [2021-05-02 17:52:10,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162929d02/654b64f719544a3aba5776950ab6772c/FLAGc0e85e94e [2021-05-02 17:52:10,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/162929d02/654b64f719544a3aba5776950ab6772c [2021-05-02 17:52:10,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:52:10,599 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:52:10,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:52:10,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:52:10,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:52:10,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595f6ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10, skipping insertion in model container [2021-05-02 17:52:10,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:52:10,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:52:10,734 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c[325,338] [2021-05-02 17:52:10,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:52:10,751 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:52:10,787 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/functions_1-1.c[325,338] [2021-05-02 17:52:10,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:52:10,796 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:52:10,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10 WrapperNode [2021-05-02 17:52:10,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:52:10,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:52:10,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:52:10,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:52:10,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (1/1) ... [2021-05-02 17:52:10,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:52:10,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:52:10,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:52:10,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:52:10,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (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 17:52:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:52:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:52:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:52:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:52:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-05-02 17:52:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:52:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:52:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:52:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:52:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:52:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:52:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:52:10,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:52:11,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:52:11,071 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:52:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:11 BoogieIcfgContainer [2021-05-02 17:52:11,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:52:11,072 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:52:11,073 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:52:11,080 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:52:11,082 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:11" (1/1) ... [2021-05-02 17:52:11,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:11 BasicIcfg [2021-05-02 17:52:11,099 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:52:11,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:52:11,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:52:11,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:52:11,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:52:10" (1/4) ... [2021-05-02 17:52:11,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3689c1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:11, skipping insertion in model container [2021-05-02 17:52:11,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:52:10" (2/4) ... [2021-05-02 17:52:11,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3689c1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:11, skipping insertion in model container [2021-05-02 17:52:11,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:52:11" (3/4) ... [2021-05-02 17:52:11,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3689c1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:52:11, skipping insertion in model container [2021-05-02 17:52:11,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:11" (4/4) ... [2021-05-02 17:52:11,121 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-1.cJordan [2021-05-02 17:52:11,127 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:52:11,129 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:52:11,149 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:52:11,160 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:52:11,161 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:52:11,161 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:52:11,161 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:52:11,161 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:52:11,161 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:52:11,161 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:52:11,161 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:52:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:11,172 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:11,173 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:11,173 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1565505021, now seen corresponding path program 1 times [2021-05-02 17:52:11,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:11,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131246502] [2021-05-02 17:52:11,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,328 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 17:52:11,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:11,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131246502] [2021-05-02 17:52:11,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131246502] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:11,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:11,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 17:52:11,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191607043] [2021-05-02 17:52:11,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 17:52:11,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:11,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 17:52:11,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:11,347 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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 17:52:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:11,401 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-05-02 17:52:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 17:52:11,403 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 17:52:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:11,407 INFO L225 Difference]: With dead ends: 23 [2021-05-02 17:52:11,407 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 17:52:11,408 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 17:52:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 17:52:11,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-05-02 17:52:11,428 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-05-02 17:52:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:11,428 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-05-02 17:52:11,428 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 17:52:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-05-02 17:52:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:11,429 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:11,429 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:11,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:52:11,430 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:11,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:11,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1564581500, now seen corresponding path program 1 times [2021-05-02 17:52:11,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:11,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39752391] [2021-05-02 17:52:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,546 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 17:52:11,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:11,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39752391] [2021-05-02 17:52:11,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39752391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:11,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:11,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 17:52:11,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895945725] [2021-05-02 17:52:11,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 17:52:11,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:11,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 17:52:11,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 17:52:11,551 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 17:52:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:11,628 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 17:52:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 17:52:11,629 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 17:52:11,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:11,631 INFO L225 Difference]: With dead ends: 20 [2021-05-02 17:52:11,631 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 17:52:11,632 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 17:52:11,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 17:52:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-05-02 17:52:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:11,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-02 17:52:11,639 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-05-02 17:52:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:11,639 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-02 17:52:11,639 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 17:52:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-02 17:52:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 17:52:11,641 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:11,641 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:11,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:52:11,641 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:11,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1890585047, now seen corresponding path program 1 times [2021-05-02 17:52:11,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:11,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430966451] [2021-05-02 17:52:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,811 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 17:52:11,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:11,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430966451] [2021-05-02 17:52:11,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430966451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:11,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284041317] [2021-05-02 17:52:11,812 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 17:52:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:11,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 17:52:11,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:11,996 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 17:52:11,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284041317] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:11,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:11,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-02 17:52:11,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441301038] [2021-05-02 17:52:11,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 17:52:11,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:11,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 17:52:11,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-02 17:52:11,998 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:12,176 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-02 17:52:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 17:52:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-05-02 17:52:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:12,178 INFO L225 Difference]: With dead ends: 23 [2021-05-02 17:52:12,178 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 17:52:12,179 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 158.8ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-05-02 17:52:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 17:52:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-02 17:52:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 17:52:12,182 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2021-05-02 17:52:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:12,183 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 17:52:12,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 17:52:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 17:52:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 17:52:12,184 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:12,184 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:12,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 17:52:12,405 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:12,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1036434190, now seen corresponding path program 2 times [2021-05-02 17:52:12,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:12,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427427266] [2021-05-02 17:52:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 17:52:12,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:12,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427427266] [2021-05-02 17:52:12,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427427266] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:12,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45764108] [2021-05-02 17:52:12,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:12,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:12,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:12,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 17:52:12,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:12,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:12,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:12,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:12,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-05-02 17:52:12,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45764108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:12,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:12,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2021-05-02 17:52:12,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935756320] [2021-05-02 17:52:12,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 17:52:12,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:12,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 17:52:12,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 17:52:12,776 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:13,017 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 17:52:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 17:52:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-05-02 17:52:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:13,019 INFO L225 Difference]: With dead ends: 26 [2021-05-02 17:52:13,019 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 17:52:13,020 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 230.7ms TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:52:13,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 17:52:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-05-02 17:52:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:13,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-02 17:52:13,027 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-02 17:52:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:13,027 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-02 17:52:13,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 17:52:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-02 17:52:13,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 17:52:13,028 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:13,028 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:13,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:13,246 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1393393715, now seen corresponding path program 3 times [2021-05-02 17:52:13,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:13,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816077257] [2021-05-02 17:52:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:13,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:13,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:13,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 17:52:13,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:13,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816077257] [2021-05-02 17:52:13,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816077257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:13,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403247439] [2021-05-02 17:52:13,404 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 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 17:52:13,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 17:52:13,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:13,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 17:52:13,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:13,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-05-02 17:52:13,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403247439] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:13,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:13,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-05-02 17:52:13,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086428911] [2021-05-02 17:52:13,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 17:52:13,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:13,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 17:52:13,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-05-02 17:52:13,606 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:13,920 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-05-02 17:52:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 17:52:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2021-05-02 17:52:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:13,921 INFO L225 Difference]: With dead ends: 29 [2021-05-02 17:52:13,921 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 17:52:13,922 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 330.4ms TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-05-02 17:52:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 17:52:13,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-02 17:52:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 7 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-05-02 17:52:13,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 29 [2021-05-02 17:52:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:13,925 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-05-02 17:52:13,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 8 states have internal predecessors, (18), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 17:52:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-05-02 17:52:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 17:52:13,926 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:13,926 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:14,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:14,133 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:14,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:14,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1397549672, now seen corresponding path program 4 times [2021-05-02 17:52:14,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:14,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340637195] [2021-05-02 17:52:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 17:52:14,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:14,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340637195] [2021-05-02 17:52:14,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340637195] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:14,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533224677] [2021-05-02 17:52:14,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:14,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:14,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:14,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 48 conjunts are in the unsatisfiable core [2021-05-02 17:52:14,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:14,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:14,528 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-05-02 17:52:14,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533224677] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:14,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:14,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2021-05-02 17:52:14,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453292747] [2021-05-02 17:52:14,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:52:14,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:14,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:52:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:52:14,530 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:14,948 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-05-02 17:52:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 17:52:14,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 35 [2021-05-02 17:52:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:14,949 INFO L225 Difference]: With dead ends: 32 [2021-05-02 17:52:14,949 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 17:52:14,949 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 396.2ms TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2021-05-02 17:52:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 17:52:14,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-05-02 17:52:14,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-05-02 17:52:14,952 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 35 [2021-05-02 17:52:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:14,953 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-05-02 17:52:14,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 17:52:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-05-02 17:52:14,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 17:52:14,954 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:14,954 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:15,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:15,157 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:15,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:15,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1441418045, now seen corresponding path program 5 times [2021-05-02 17:52:15,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:15,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925706764] [2021-05-02 17:52:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 17:52:15,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:15,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925706764] [2021-05-02 17:52:15,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925706764] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:15,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501784943] [2021-05-02 17:52:15,349 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:15,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 17:52:15,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:15,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 53 conjunts are in the unsatisfiable core [2021-05-02 17:52:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:15,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-05-02 17:52:15,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501784943] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:15,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:15,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-05-02 17:52:15,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730852023] [2021-05-02 17:52:15,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 17:52:15,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:15,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 17:52:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-05-02 17:52:15,576 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:16,072 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-05-02 17:52:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 17:52:16,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2021-05-02 17:52:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:16,075 INFO L225 Difference]: With dead ends: 35 [2021-05-02 17:52:16,075 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 17:52:16,075 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 486.0ms TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-05-02 17:52:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 17:52:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 17:52:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-05-02 17:52:16,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 41 [2021-05-02 17:52:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:16,084 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-05-02 17:52:16,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 10 states have internal predecessors, (22), 7 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 17:52:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-05-02 17:52:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 17:52:16,086 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:16,086 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:16,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:16,303 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1131810526, now seen corresponding path program 6 times [2021-05-02 17:52:16,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:16,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851148994] [2021-05-02 17:52:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:16,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 17:52:16,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:16,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851148994] [2021-05-02 17:52:16,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851148994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:16,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562112903] [2021-05-02 17:52:16,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:16,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 17:52:16,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:16,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 17:52:16,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:16,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:16,835 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 17:52:16,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562112903] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:16,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:16,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18 [2021-05-02 17:52:16,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120246204] [2021-05-02 17:52:16,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 17:52:16,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 17:52:16,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-05-02 17:52:16,839 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:17,390 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2021-05-02 17:52:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 17:52:17,390 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 47 [2021-05-02 17:52:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:17,391 INFO L225 Difference]: With dead ends: 38 [2021-05-02 17:52:17,391 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 17:52:17,391 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 547.5ms TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-05-02 17:52:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 17:52:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-02 17:52:17,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-02 17:52:17,394 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 47 [2021-05-02 17:52:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:17,394 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-02 17:52:17,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 11 states have internal predecessors, (24), 8 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 17:52:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-02 17:52:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 17:52:17,395 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:17,395 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:17,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:17,596 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash 638375751, now seen corresponding path program 7 times [2021-05-02 17:52:17,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:17,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330918553] [2021-05-02 17:52:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 17:52:17,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:17,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330918553] [2021-05-02 17:52:17,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330918553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:17,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809926316] [2021-05-02 17:52:17,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:17,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 17:52:17,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:17,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:17,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:17,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:17,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-05-02 17:52:18,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809926316] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:18,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:18,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20 [2021-05-02 17:52:18,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915416095] [2021-05-02 17:52:18,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 17:52:18,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:18,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 17:52:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-05-02 17:52:18,128 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:18,905 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-05-02 17:52:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 17:52:18,906 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 53 [2021-05-02 17:52:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:18,906 INFO L225 Difference]: With dead ends: 41 [2021-05-02 17:52:18,906 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 17:52:18,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 748.5ms TimeCoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 17:52:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 17:52:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-02 17:52:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2021-05-02 17:52:18,909 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 53 [2021-05-02 17:52:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:18,909 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2021-05-02 17:52:18,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.3) internal successors, (26), 12 states have internal predecessors, (26), 9 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 17:52:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2021-05-02 17:52:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 17:52:18,910 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:18,910 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:19,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 17:52:19,125 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:19,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1687276972, now seen corresponding path program 8 times [2021-05-02 17:52:19,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:19,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023330245] [2021-05-02 17:52:19,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 17:52:19,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:19,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023330245] [2021-05-02 17:52:19,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023330245] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:19,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436289196] [2021-05-02 17:52:19,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:19,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:19,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:19,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 83 conjunts are in the unsatisfiable core [2021-05-02 17:52:19,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:19,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-05-02 17:52:19,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436289196] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:19,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:19,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22 [2021-05-02 17:52:19,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515837236] [2021-05-02 17:52:19,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 17:52:19,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 17:52:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-05-02 17:52:19,826 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:20,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:20,593 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-05-02 17:52:20,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 17:52:20,594 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2021-05-02 17:52:20,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:20,594 INFO L225 Difference]: With dead ends: 44 [2021-05-02 17:52:20,594 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 17:52:20,595 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 794.5ms TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 17:52:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 17:52:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2021-05-02 17:52:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 12 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2021-05-02 17:52:20,598 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 59 [2021-05-02 17:52:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:20,598 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2021-05-02 17:52:20,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 13 states have internal predecessors, (28), 10 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-02 17:52:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2021-05-02 17:52:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 17:52:20,599 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:20,599 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:20,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-02 17:52:20,813 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:20,813 INFO L82 PathProgramCache]: Analyzing trace with hash -874797999, now seen corresponding path program 9 times [2021-05-02 17:52:20,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:20,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925223776] [2021-05-02 17:52:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 17:52:21,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:21,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925223776] [2021-05-02 17:52:21,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925223776] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:21,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429927919] [2021-05-02 17:52:21,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:21,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 17:52:21,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:21,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 17:52:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:21,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-05-02 17:52:21,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429927919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:21,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:21,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 26 [2021-05-02 17:52:21,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725521508] [2021-05-02 17:52:21,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 17:52:21,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:21,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 17:52:21,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2021-05-02 17:52:21,794 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:22,754 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2021-05-02 17:52:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 17:52:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 65 [2021-05-02 17:52:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:22,755 INFO L225 Difference]: With dead ends: 47 [2021-05-02 17:52:22,755 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 17:52:22,755 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 73 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1033.3ms TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 17:52:22,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 17:52:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-05-02 17:52:22,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 13 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-05-02 17:52:22,759 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 65 [2021-05-02 17:52:22,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:22,759 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-05-02 17:52:22,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 15 states have internal predecessors, (32), 12 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 17:52:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-05-02 17:52:22,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 17:52:22,760 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:22,760 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:22,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:22,963 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:22,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1716595510, now seen corresponding path program 10 times [2021-05-02 17:52:22,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:22,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023534700] [2021-05-02 17:52:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 17:52:23,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:23,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023534700] [2021-05-02 17:52:23,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023534700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:23,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092231618] [2021-05-02 17:52:23,358 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:23,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:23,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:23,410 WARN L261 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 17:52:23,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:23,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-05-02 17:52:23,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092231618] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:23,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:23,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 28 [2021-05-02 17:52:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418195098] [2021-05-02 17:52:23,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 17:52:23,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:23,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 17:52:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2021-05-02 17:52:23,764 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:24,900 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-05-02 17:52:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 17:52:24,901 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 71 [2021-05-02 17:52:24,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:24,901 INFO L225 Difference]: With dead ends: 50 [2021-05-02 17:52:24,901 INFO L226 Difference]: Without dead ends: 50 [2021-05-02 17:52:24,902 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 80 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1131.1ms TimeCoverageRelationStatistics Valid=193, Invalid=2257, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 17:52:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-02 17:52:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-05-02 17:52:24,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 14 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2021-05-02 17:52:24,909 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 71 [2021-05-02 17:52:24,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:24,909 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2021-05-02 17:52:24,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 17:52:24,909 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2021-05-02 17:52:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 17:52:24,910 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:24,910 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:25,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:25,123 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1778201179, now seen corresponding path program 11 times [2021-05-02 17:52:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:25,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604282681] [2021-05-02 17:52:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 17:52:25,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:25,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604282681] [2021-05-02 17:52:25,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604282681] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:25,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77690524] [2021-05-02 17:52:25,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:25,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 17:52:25,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-02 17:52:25,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:25,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:25,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:25,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:25,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:25,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-05-02 17:52:26,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77690524] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:26,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:26,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28 [2021-05-02 17:52:26,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961246156] [2021-05-02 17:52:26,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 17:52:26,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:26,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 17:52:26,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2021-05-02 17:52:26,337 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:27,483 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2021-05-02 17:52:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 17:52:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 77 [2021-05-02 17:52:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:27,485 INFO L225 Difference]: With dead ends: 53 [2021-05-02 17:52:27,485 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 17:52:27,486 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1233.9ms TimeCoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 17:52:27,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 17:52:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2021-05-02 17:52:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 15 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2021-05-02 17:52:27,499 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 77 [2021-05-02 17:52:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:27,500 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2021-05-02 17:52:27,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 16 states have internal predecessors, (34), 13 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 17:52:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-05-02 17:52:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 17:52:27,501 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:27,501 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:27,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 17:52:27,707 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash -309425728, now seen corresponding path program 12 times [2021-05-02 17:52:27,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:27,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217459037] [2021-05-02 17:52:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 17:52:28,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:28,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217459037] [2021-05-02 17:52:28,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217459037] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:28,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351036492] [2021-05-02 17:52:28,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:28,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 17:52:28,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:28,340 WARN L261 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 128 conjunts are in the unsatisfiable core [2021-05-02 17:52:28,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:28,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-05-02 17:52:28,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351036492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:28,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:28,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 30] total 32 [2021-05-02 17:52:28,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616527677] [2021-05-02 17:52:28,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 17:52:28,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:28,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 17:52:28,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2021-05-02 17:52:28,855 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:30,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:30,234 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2021-05-02 17:52:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 17:52:30,234 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 83 [2021-05-02 17:52:30,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:30,235 INFO L225 Difference]: With dead ends: 56 [2021-05-02 17:52:30,235 INFO L226 Difference]: Without dead ends: 56 [2021-05-02 17:52:30,236 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 1454.9ms TimeCoverageRelationStatistics Valid=227, Invalid=3079, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 17:52:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-02 17:52:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2021-05-02 17:52:30,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 16 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-05-02 17:52:30,238 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 83 [2021-05-02 17:52:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:30,238 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-05-02 17:52:30,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 17:52:30,239 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-05-02 17:52:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 17:52:30,239 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:30,239 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:30,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 17:52:30,443 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash -581435035, now seen corresponding path program 13 times [2021-05-02 17:52:30,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:30,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441009648] [2021-05-02 17:52:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 17:52:30,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:30,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441009648] [2021-05-02 17:52:30,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441009648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:30,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329151478] [2021-05-02 17:52:30,935 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:30,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 133 conjunts are in the unsatisfiable core [2021-05-02 17:52:30,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-05-02 17:52:31,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329151478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:31,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:31,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32 [2021-05-02 17:52:31,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350396409] [2021-05-02 17:52:31,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 17:52:31,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:31,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 17:52:31,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2021-05-02 17:52:31,481 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:32,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:32,883 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2021-05-02 17:52:32,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 17:52:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 89 [2021-05-02 17:52:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:32,884 INFO L225 Difference]: With dead ends: 59 [2021-05-02 17:52:32,884 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 17:52:32,884 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 103 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1543.0ms TimeCoverageRelationStatistics Valid=240, Invalid=3300, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 17:52:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 17:52:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-05-02 17:52:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 17 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:32,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-05-02 17:52:32,888 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 89 [2021-05-02 17:52:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:32,888 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-05-02 17:52:32,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.1875) internal successors, (38), 18 states have internal predecessors, (38), 15 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 17:52:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-05-02 17:52:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 17:52:32,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:32,889 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:33,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:33,097 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:33,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash 810576202, now seen corresponding path program 14 times [2021-05-02 17:52:33,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:33,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966835586] [2021-05-02 17:52:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:33,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 17:52:33,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:33,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966835586] [2021-05-02 17:52:33,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966835586] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:33,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936918362] [2021-05-02 17:52:33,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:33,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:52:33,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:33,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 143 conjunts are in the unsatisfiable core [2021-05-02 17:52:33,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:33,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-05-02 17:52:34,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936918362] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:34,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:34,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34 [2021-05-02 17:52:34,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103489728] [2021-05-02 17:52:34,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 17:52:34,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:34,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 17:52:34,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 17:52:34,212 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:35,793 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2021-05-02 17:52:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 17:52:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 95 [2021-05-02 17:52:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:35,794 INFO L225 Difference]: With dead ends: 62 [2021-05-02 17:52:35,794 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 17:52:35,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 110 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1735.5ms TimeCoverageRelationStatistics Valid=257, Invalid=3775, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 17:52:35,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 17:52:35,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-05-02 17:52:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 18 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-02 17:52:35,797 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 95 [2021-05-02 17:52:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:35,798 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-02 17:52:35,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 19 states have internal predecessors, (40), 16 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-02 17:52:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-02 17:52:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 17:52:35,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:35,798 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:36,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:36,013 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1561497967, now seen corresponding path program 15 times [2021-05-02 17:52:36,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:36,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982055047] [2021-05-02 17:52:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 17:52:36,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982055047] [2021-05-02 17:52:36,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982055047] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:36,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472138790] [2021-05-02 17:52:36,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:36,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 17:52:36,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:36,978 WARN L261 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 159 conjunts are in the unsatisfiable core [2021-05-02 17:52:36,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:37,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-05-02 17:52:37,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472138790] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:37,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:37,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36 [2021-05-02 17:52:37,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029777417] [2021-05-02 17:52:37,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 17:52:37,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:37,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 17:52:37,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 17:52:37,636 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:39,356 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2021-05-02 17:52:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 17:52:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 101 [2021-05-02 17:52:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:39,357 INFO L225 Difference]: With dead ends: 65 [2021-05-02 17:52:39,357 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 17:52:39,358 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 116 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1946.5ms TimeCoverageRelationStatistics Valid=274, Invalid=4282, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 17:52:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 17:52:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2021-05-02 17:52:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 19 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:52:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2021-05-02 17:52:39,360 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 101 [2021-05-02 17:52:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:39,361 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2021-05-02 17:52:39,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 20 states have internal predecessors, (42), 17 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-05-02 17:52:39,361 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2021-05-02 17:52:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 17:52:39,361 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:39,361 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:39,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 17:52:39,565 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash 249383380, now seen corresponding path program 16 times [2021-05-02 17:52:39,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:39,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208017209] [2021-05-02 17:52:39,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:52:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 17:52:40,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:40,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208017209] [2021-05-02 17:52:40,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208017209] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:40,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589057167] [2021-05-02 17:52:40,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:40,369 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:52:40,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:40,371 WARN L261 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 168 conjunts are in the unsatisfiable core [2021-05-02 17:52:40,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:40,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:40,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 17:52:41,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589057167] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:41,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:41,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38] total 40 [2021-05-02 17:52:41,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700788027] [2021-05-02 17:52:41,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 17:52:41,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 17:52:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1466, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 17:52:41,177 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:52:43,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:43,226 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-05-02 17:52:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 17:52:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 107 [2021-05-02 17:52:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:43,227 INFO L225 Difference]: With dead ends: 68 [2021-05-02 17:52:43,227 INFO L226 Difference]: Without dead ends: 68 [2021-05-02 17:52:43,228 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 122 SyntacticMatches, 16 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 2388.8ms TimeCoverageRelationStatistics Valid=295, Invalid=5107, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 17:52:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-02 17:52:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-05-02 17:52:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:52:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-05-02 17:52:43,230 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 107 [2021-05-02 17:52:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:43,231 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-05-02 17:52:43,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 17:52:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2021-05-02 17:52:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 17:52:43,231 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:43,231 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:43,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:43,447 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash 445866617, now seen corresponding path program 17 times [2021-05-02 17:52:43,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:43,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222640268] [2021-05-02 17:52:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:52:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:52:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 17:52:44,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:44,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222640268] [2021-05-02 17:52:44,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222640268] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:44,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752946649] [2021-05-02 17:52:44,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:45,990 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 17:52:45,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:46,003 WARN L261 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 184 conjunts are in the unsatisfiable core [2021-05-02 17:52:46,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:46,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-05-02 17:52:46,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752946649] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:46,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:46,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 40 [2021-05-02 17:52:46,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778842636] [2021-05-02 17:52:46,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 17:52:46,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:46,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 17:52:46,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1465, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 17:52:46,932 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:52:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:49,032 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2021-05-02 17:52:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 17:52:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 113 [2021-05-02 17:52:49,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:49,033 INFO L225 Difference]: With dead ends: 71 [2021-05-02 17:52:49,033 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 17:52:49,034 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 120 SyntacticMatches, 28 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2522.4ms TimeCoverageRelationStatistics Valid=308, Invalid=5392, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 17:52:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 17:52:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-05-02 17:52:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 21 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:52:49,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2021-05-02 17:52:49,036 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 113 [2021-05-02 17:52:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:49,036 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2021-05-02 17:52:49,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.15) internal successors, (46), 22 states have internal predecessors, (46), 19 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-05-02 17:52:49,036 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2021-05-02 17:52:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 17:52:49,037 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:49,037 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:49,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 17:52:49,240 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:49,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1279546530, now seen corresponding path program 18 times [2021-05-02 17:52:49,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:49,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539094972] [2021-05-02 17:52:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:49,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:52:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:52:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:52:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:50,053 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 17:52:50,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:50,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539094972] [2021-05-02 17:52:50,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539094972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:50,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674553565] [2021-05-02 17:52:50,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:51,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 17:52:51,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:52:51,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 186 conjunts are in the unsatisfiable core [2021-05-02 17:52:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:51,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:51,932 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2021-05-02 17:52:51,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674553565] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:51,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:51,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 42 [2021-05-02 17:52:51,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757283715] [2021-05-02 17:52:51,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 17:52:51,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:51,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 17:52:51,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 17:52:51,934 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:52:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:54,371 INFO L93 Difference]: Finished difference Result 74 states and 93 transitions. [2021-05-02 17:52:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 17:52:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 119 [2021-05-02 17:52:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:54,372 INFO L225 Difference]: With dead ends: 74 [2021-05-02 17:52:54,372 INFO L226 Difference]: Without dead ends: 74 [2021-05-02 17:52:54,373 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 135 SyntacticMatches, 21 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2736.6ms TimeCoverageRelationStatistics Valid=325, Invalid=5995, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 17:52:54,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-02 17:52:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2021-05-02 17:52:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 22 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:52:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-05-02 17:52:54,375 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 119 [2021-05-02 17:52:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:54,376 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-05-02 17:52:54,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 23 states have internal predecessors, (48), 20 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 17:52:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-05-02 17:52:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 17:52:54,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:54,376 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:54,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 17:52:54,580 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash -511642493, now seen corresponding path program 19 times [2021-05-02 17:52:54,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:54,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188491581] [2021-05-02 17:52:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:52:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:52:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:52:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:52:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:52:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:52:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:52:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:52:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:52:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:52:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:52:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:52:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:52:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:52:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:52:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:52:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:52:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:52:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:52:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 17:52:55,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:55,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188491581] [2021-05-02 17:52:55,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188491581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:55,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678146729] [2021-05-02 17:52:55,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:52:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:55,579 WARN L261 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 193 conjunts are in the unsatisfiable core [2021-05-02 17:52:55,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:55,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:55,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1045 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2021-05-02 17:52:56,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678146729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:56,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:56,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 44 [2021-05-02 17:52:56,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487012744] [2021-05-02 17:52:56,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 17:52:56,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:56,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 17:52:56,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1787, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 17:52:56,515 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:52:59,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:59,128 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2021-05-02 17:52:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 17:52:59,128 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 125 [2021-05-02 17:52:59,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:59,129 INFO L225 Difference]: With dead ends: 77 [2021-05-02 17:52:59,129 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 17:52:59,130 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 145 SyntacticMatches, 19 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2915.5ms TimeCoverageRelationStatistics Valid=342, Invalid=6630, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 17:52:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 17:52:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2021-05-02 17:52:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 23 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:52:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2021-05-02 17:52:59,132 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 125 [2021-05-02 17:52:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:59,132 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2021-05-02 17:52:59,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 24 states have internal predecessors, (50), 21 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-05-02 17:52:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2021-05-02 17:52:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 17:52:59,133 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:59,133 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:59,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-05-02 17:52:59,340 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:59,340 INFO L82 PathProgramCache]: Analyzing trace with hash 867306984, now seen corresponding path program 20 times [2021-05-02 17:52:59,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:59,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122007643] [2021-05-02 17:52:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 17:53:00,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:00,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122007643] [2021-05-02 17:53:00,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122007643] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:00,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869557224] [2021-05-02 17:53:00,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:00,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:53:00,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:00,415 WARN L261 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 203 conjunts are in the unsatisfiable core [2021-05-02 17:53:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:00,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:00,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2021-05-02 17:53:01,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869557224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:01,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:01,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 46 [2021-05-02 17:53:01,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430268181] [2021-05-02 17:53:01,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 17:53:01,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:01,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 17:53:01,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1960, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 17:53:01,411 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:53:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:04,143 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2021-05-02 17:53:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 17:53:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 131 [2021-05-02 17:53:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:04,146 INFO L225 Difference]: With dead ends: 80 [2021-05-02 17:53:04,146 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 17:53:04,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 152 SyntacticMatches, 20 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3164.2ms TimeCoverageRelationStatistics Valid=359, Invalid=7297, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 17:53:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 17:53:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2021-05-02 17:53:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 24 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2021-05-02 17:53:04,149 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 131 [2021-05-02 17:53:04,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:04,149 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2021-05-02 17:53:04,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 25 states have internal predecessors, (52), 22 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-05-02 17:53:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2021-05-02 17:53:04,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 17:53:04,150 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:04,150 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:04,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 17:53:04,357 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:04,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1212037235, now seen corresponding path program 21 times [2021-05-02 17:53:04,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:04,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135927858] [2021-05-02 17:53:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 17:53:05,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:05,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135927858] [2021-05-02 17:53:05,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135927858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:05,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198987930] [2021-05-02 17:53:05,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:06,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 17:53:06,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:06,778 WARN L261 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 214 conjunts are in the unsatisfiable core [2021-05-02 17:53:06,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:06,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:06,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-05-02 17:53:07,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198987930] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:07,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:07,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 48 [2021-05-02 17:53:07,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502935872] [2021-05-02 17:53:07,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 17:53:07,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:07,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 17:53:07,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=2141, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 17:53:07,928 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:10,908 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2021-05-02 17:53:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 17:53:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 137 [2021-05-02 17:53:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:10,909 INFO L225 Difference]: With dead ends: 83 [2021-05-02 17:53:10,909 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 17:53:10,910 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 158 SyntacticMatches, 22 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3559.9ms TimeCoverageRelationStatistics Valid=376, Invalid=7996, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 17:53:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 17:53:10,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2021-05-02 17:53:10,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.0188679245283019) internal successors, (54), 53 states have internal predecessors, (54), 25 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:10,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-05-02 17:53:10,912 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 102 transitions. Word has length 137 [2021-05-02 17:53:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:10,913 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-05-02 17:53:10,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.125) internal successors, (54), 26 states have internal predecessors, (54), 23 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-05-02 17:53:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 102 transitions. [2021-05-02 17:53:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 17:53:10,913 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:10,913 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:11,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 17:53:11,117 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:11,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:11,117 INFO L82 PathProgramCache]: Analyzing trace with hash 768012658, now seen corresponding path program 22 times [2021-05-02 17:53:11,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:11,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702663920] [2021-05-02 17:53:11,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 17:53:12,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:12,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702663920] [2021-05-02 17:53:12,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702663920] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:12,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629309516] [2021-05-02 17:53:12,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:12,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:53:12,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:12,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 228 conjunts are in the unsatisfiable core [2021-05-02 17:53:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:12,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:12,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2021-05-02 17:53:13,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629309516] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:13,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:13,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 52 [2021-05-02 17:53:13,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044397801] [2021-05-02 17:53:13,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 17:53:13,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 17:53:13,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=2528, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 17:53:13,571 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:16,917 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-05-02 17:53:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 17:53:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 143 [2021-05-02 17:53:16,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:16,918 INFO L225 Difference]: With dead ends: 86 [2021-05-02 17:53:16,918 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 17:53:16,919 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 164 SyntacticMatches, 22 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 3846.2ms TimeCoverageRelationStatistics Valid=397, Invalid=9109, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 17:53:16,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 17:53:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2021-05-02 17:53:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.018181818181818) internal successors, (56), 55 states have internal predecessors, (56), 26 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-05-02 17:53:16,921 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 143 [2021-05-02 17:53:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:16,921 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-05-02 17:53:16,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-05-02 17:53:16,922 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-05-02 17:53:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 17:53:16,922 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:16,922 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:17,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:17,130 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:17,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:17,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2105301911, now seen corresponding path program 23 times [2021-05-02 17:53:17,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:17,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510348772] [2021-05-02 17:53:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 17:53:18,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:18,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510348772] [2021-05-02 17:53:18,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510348772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:18,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390972922] [2021-05-02 17:53:18,340 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:22,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 17:53:22,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:22,972 WARN L261 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 17:53:22,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:23,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:23,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 759 trivial. 0 not checked. [2021-05-02 17:53:24,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390972922] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:24,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:24,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 52 [2021-05-02 17:53:24,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245294678] [2021-05-02 17:53:24,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 17:53:24,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:24,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 17:53:24,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 17:53:24,546 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:28,006 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2021-05-02 17:53:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 17:53:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 149 [2021-05-02 17:53:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:28,008 INFO L225 Difference]: With dead ends: 89 [2021-05-02 17:53:28,008 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 17:53:28,009 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 157 SyntacticMatches, 39 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 4317.0ms TimeCoverageRelationStatistics Valid=410, Invalid=9490, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 17:53:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 17:53:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2021-05-02 17:53:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 27 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2021-05-02 17:53:28,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 149 [2021-05-02 17:53:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:28,011 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2021-05-02 17:53:28,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 28 states have internal predecessors, (58), 25 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 17:53:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2021-05-02 17:53:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 17:53:28,012 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:28,012 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:28,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 17:53:28,217 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:28,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1799411196, now seen corresponding path program 24 times [2021-05-02 17:53:28,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:28,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779126273] [2021-05-02 17:53:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 17:53:29,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:29,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779126273] [2021-05-02 17:53:29,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779126273] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:29,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292951278] [2021-05-02 17:53:29,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:30,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 17:53:30,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:30,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 249 conjunts are in the unsatisfiable core [2021-05-02 17:53:30,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:31,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:32,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-05-02 17:53:32,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292951278] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:32,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:32,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 54 [2021-05-02 17:53:32,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968190141] [2021-05-02 17:53:32,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 17:53:32,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:32,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 17:53:32,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2732, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 17:53:32,286 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:36,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:36,079 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-05-02 17:53:36,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 17:53:36,079 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 155 [2021-05-02 17:53:36,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:36,080 INFO L225 Difference]: With dead ends: 92 [2021-05-02 17:53:36,080 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 17:53:36,080 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 179 SyntacticMatches, 25 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 4367.9ms TimeCoverageRelationStatistics Valid=427, Invalid=10285, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 17:53:36,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 17:53:36,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-05-02 17:53:36,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 59 states have internal predecessors, (60), 28 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:53:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 114 transitions. [2021-05-02 17:53:36,083 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 114 transitions. Word has length 155 [2021-05-02 17:53:36,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:36,083 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 114 transitions. [2021-05-02 17:53:36,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 29 states have internal predecessors, (60), 26 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-05-02 17:53:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 114 transitions. [2021-05-02 17:53:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 17:53:36,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:36,084 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:36,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:36,288 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1927860063, now seen corresponding path program 25 times [2021-05-02 17:53:36,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:36,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521873672] [2021-05-02 17:53:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:53:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 17:53:37,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:37,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521873672] [2021-05-02 17:53:37,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521873672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:37,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203173358] [2021-05-02 17:53:37,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:37,775 WARN L261 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 253 conjunts are in the unsatisfiable core [2021-05-02 17:53:37,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:37,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:37,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:38,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-05-02 17:53:39,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203173358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:39,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:39,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 56 [2021-05-02 17:53:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703305593] [2021-05-02 17:53:39,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 17:53:39,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:39,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 17:53:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2945, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 17:53:39,198 INFO L87 Difference]: Start difference. First operand 90 states and 114 transitions. Second operand has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:53:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:43,184 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2021-05-02 17:53:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 17:53:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 161 [2021-05-02 17:53:43,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:43,186 INFO L225 Difference]: With dead ends: 95 [2021-05-02 17:53:43,186 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 17:53:43,186 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 187 SyntacticMatches, 25 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 4610.8ms TimeCoverageRelationStatistics Valid=444, Invalid=11112, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 17:53:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 17:53:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2021-05-02 17:53:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 29 states have call successors, (29), 4 states have call predecessors, (29), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:53:43,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2021-05-02 17:53:43,189 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 161 [2021-05-02 17:53:43,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:43,189 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2021-05-02 17:53:43,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 30 states have internal predecessors, (62), 27 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 17:53:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2021-05-02 17:53:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 17:53:43,190 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:43,190 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:43,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 17:53:43,403 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:43,403 INFO L82 PathProgramCache]: Analyzing trace with hash 2141600646, now seen corresponding path program 26 times [2021-05-02 17:53:43,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:43,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040858537] [2021-05-02 17:53:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:53:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:53:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 17:53:45,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:45,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040858537] [2021-05-02 17:53:45,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040858537] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:45,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8321590] [2021-05-02 17:53:45,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:45,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:53:45,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:45,124 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 263 conjunts are in the unsatisfiable core [2021-05-02 17:53:45,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:45,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1976 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2021-05-02 17:53:46,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8321590] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:46,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:46,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 58 [2021-05-02 17:53:46,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636283206] [2021-05-02 17:53:46,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 17:53:46,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 17:53:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=3166, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 17:53:46,706 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:53:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:53:51,097 INFO L93 Difference]: Finished difference Result 98 states and 125 transitions. [2021-05-02 17:53:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 17:53:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 167 [2021-05-02 17:53:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:53:51,098 INFO L225 Difference]: With dead ends: 98 [2021-05-02 17:53:51,098 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 17:53:51,099 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 194 SyntacticMatches, 26 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1435 ImplicationChecksByTransitivity, 5090.1ms TimeCoverageRelationStatistics Valid=461, Invalid=11971, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 17:53:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 17:53:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2021-05-02 17:53:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 30 states have call successors, (30), 4 states have call predecessors, (30), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:53:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 122 transitions. [2021-05-02 17:53:51,101 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 122 transitions. Word has length 167 [2021-05-02 17:53:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:53:51,102 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 122 transitions. [2021-05-02 17:53:51,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.103448275862069) internal successors, (64), 31 states have internal predecessors, (64), 28 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-05-02 17:53:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 122 transitions. [2021-05-02 17:53:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 17:53:51,102 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:53:51,102 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:53:51,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 17:53:51,318 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:53:51,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:53:51,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1530447531, now seen corresponding path program 27 times [2021-05-02 17:53:51,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:53:51,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558950576] [2021-05-02 17:53:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:53:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:53:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:53:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:53:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:53:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:53:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:53:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:53:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:53:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:53:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:53:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:53:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:53:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:53:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:53:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:53:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:53:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:53:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:53:52,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:53:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:53:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:53:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:53:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:53:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:53:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:53:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:53:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:53:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:53:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:53:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 17:53:53,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:53:53,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558950576] [2021-05-02 17:53:53,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558950576] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:53,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692117794] [2021-05-02 17:53:53,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:53:58,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 17:53:58,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:53:58,052 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 278 conjunts are in the unsatisfiable core [2021-05-02 17:53:58,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:53:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:58,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:53:59,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2133 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-05-02 17:53:59,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692117794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:53:59,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:53:59,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 60] total 62 [2021-05-02 17:53:59,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836513296] [2021-05-02 17:53:59,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 17:53:59,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:53:59,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 17:53:59,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3633, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 17:53:59,859 INFO L87 Difference]: Start difference. First operand 96 states and 122 transitions. Second operand has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:54:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:04,631 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-05-02 17:54:04,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 17:54:04,632 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 173 [2021-05-02 17:54:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:04,632 INFO L225 Difference]: With dead ends: 101 [2021-05-02 17:54:04,632 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 17:54:04,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 199 SyntacticMatches, 27 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 5589.8ms TimeCoverageRelationStatistics Valid=482, Invalid=13324, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 17:54:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 17:54:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-05-02 17:54:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 31 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-05-02 17:54:04,635 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 173 [2021-05-02 17:54:04,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:04,635 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-05-02 17:54:04,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.096774193548387) internal successors, (68), 33 states have internal predecessors, (68), 30 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-05-02 17:54:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-05-02 17:54:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 17:54:04,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:04,636 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:04,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 17:54:04,841 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1757258256, now seen corresponding path program 28 times [2021-05-02 17:54:04,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:04,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97469859] [2021-05-02 17:54:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:06,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 17:54:06,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:06,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97469859] [2021-05-02 17:54:06,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97469859] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:06,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025488513] [2021-05-02 17:54:06,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:06,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:54:06,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:06,678 WARN L261 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 288 conjunts are in the unsatisfiable core [2021-05-02 17:54:06,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:06,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:06,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:07,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2296 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-05-02 17:54:08,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025488513] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:08,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:08,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 62] total 64 [2021-05-02 17:54:08,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046306112] [2021-05-02 17:54:08,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 17:54:08,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:08,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 17:54:08,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3878, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 17:54:08,667 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:13,957 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2021-05-02 17:54:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 17:54:13,958 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 179 [2021-05-02 17:54:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:13,958 INFO L225 Difference]: With dead ends: 104 [2021-05-02 17:54:13,959 INFO L226 Difference]: Without dead ends: 104 [2021-05-02 17:54:13,959 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 206 SyntacticMatches, 28 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 6108.5ms TimeCoverageRelationStatistics Valid=499, Invalid=14263, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 17:54:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-02 17:54:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 102. [2021-05-02 17:54:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 32 states have call successors, (32), 4 states have call predecessors, (32), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2021-05-02 17:54:13,962 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 179 [2021-05-02 17:54:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:13,962 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2021-05-02 17:54:13,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-05-02 17:54:13,962 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2021-05-02 17:54:13,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 17:54:13,963 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:13,963 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:14,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 17:54:14,179 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash 382180789, now seen corresponding path program 29 times [2021-05-02 17:54:14,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:14,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266424128] [2021-05-02 17:54:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:54:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:16,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 17:54:16,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:16,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266424128] [2021-05-02 17:54:16,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266424128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:16,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439677062] [2021-05-02 17:54:16,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:32,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 17:54:32,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:32,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 321 conjunts are in the unsatisfiable core [2021-05-02 17:54:32,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:32,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:32,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:33,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2465 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-05-02 17:54:34,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439677062] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:34,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:34,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 64 [2021-05-02 17:54:34,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665272689] [2021-05-02 17:54:34,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 17:54:34,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:34,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 17:54:34,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3877, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 17:54:34,871 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:40,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:40,256 INFO L93 Difference]: Finished difference Result 107 states and 137 transitions. [2021-05-02 17:54:40,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 17:54:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 185 [2021-05-02 17:54:40,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:40,257 INFO L225 Difference]: With dead ends: 107 [2021-05-02 17:54:40,257 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 17:54:40,258 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 187 SyntacticMatches, 57 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 6996.7ms TimeCoverageRelationStatistics Valid=512, Invalid=14740, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 17:54:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 17:54:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-05-02 17:54:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 33 states have call successors, (33), 4 states have call predecessors, (33), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:54:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 134 transitions. [2021-05-02 17:54:40,260 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 134 transitions. Word has length 185 [2021-05-02 17:54:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:40,260 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 134 transitions. [2021-05-02 17:54:40,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.09375) internal successors, (70), 34 states have internal predecessors, (70), 31 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 17:54:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 134 transitions. [2021-05-02 17:54:40,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 17:54:40,261 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:40,261 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:40,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 17:54:40,465 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash 781027738, now seen corresponding path program 30 times [2021-05-02 17:54:40,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:40,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362214169] [2021-05-02 17:54:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:54:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:54:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 17:54:42,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:42,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362214169] [2021-05-02 17:54:42,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362214169] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:42,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150605132] [2021-05-02 17:54:42,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:46,559 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 17:54:46,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:54:46,569 WARN L261 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 303 conjunts are in the unsatisfiable core [2021-05-02 17:54:46,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:46,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:46,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:47,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-05-02 17:54:48,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150605132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:48,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:48,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 66 [2021-05-02 17:54:48,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941348913] [2021-05-02 17:54:48,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 17:54:48,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:48,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 17:54:48,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=4130, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 17:54:48,714 INFO L87 Difference]: Start difference. First operand 105 states and 134 transitions. Second operand has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:54:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:54:54,559 INFO L93 Difference]: Finished difference Result 110 states and 141 transitions. [2021-05-02 17:54:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 17:54:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 191 [2021-05-02 17:54:54,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:54:54,561 INFO L225 Difference]: With dead ends: 110 [2021-05-02 17:54:54,561 INFO L226 Difference]: Without dead ends: 110 [2021-05-02 17:54:54,562 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 222 SyntacticMatches, 30 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1895 ImplicationChecksByTransitivity, 6783.0ms TimeCoverageRelationStatistics Valid=529, Invalid=15727, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 17:54:54,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-02 17:54:54,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2021-05-02 17:54:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 34 states have call successors, (34), 4 states have call predecessors, (34), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:54:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 138 transitions. [2021-05-02 17:54:54,564 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 138 transitions. Word has length 191 [2021-05-02 17:54:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:54:54,564 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 138 transitions. [2021-05-02 17:54:54,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 35 states have internal predecessors, (72), 32 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-05-02 17:54:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 138 transitions. [2021-05-02 17:54:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 17:54:54,565 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:54:54,565 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:54:54,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:54,770 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:54:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:54:54,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1223308735, now seen corresponding path program 31 times [2021-05-02 17:54:54,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:54:54,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731287962] [2021-05-02 17:54:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:54:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:54:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:54:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:54:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:54:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:54:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:54:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:54:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:54:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:54:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:54:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:54:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:54:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:54:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:54:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:54:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:54:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:54:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:54:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:54:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:54:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:54:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:54:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:54:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:54:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:54:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:54:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:54:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:54:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:54:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:54:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:54:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:54:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 17:54:56,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:54:56,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731287962] [2021-05-02 17:54:56,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731287962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:56,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368725809] [2021-05-02 17:54:56,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:54:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:54:57,039 WARN L261 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 313 conjunts are in the unsatisfiable core [2021-05-02 17:54:57,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:54:57,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:57,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:58,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:54:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2021-05-02 17:54:59,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368725809] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:54:59,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:54:59,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 68 [2021-05-02 17:54:59,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617343553] [2021-05-02 17:54:59,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 17:54:59,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:54:59,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 17:54:59,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=4391, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 17:54:59,364 INFO L87 Difference]: Start difference. First operand 108 states and 138 transitions. Second operand has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:55:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:05,996 INFO L93 Difference]: Finished difference Result 113 states and 145 transitions. [2021-05-02 17:55:05,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 17:55:05,997 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 197 [2021-05-02 17:55:05,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:05,998 INFO L225 Difference]: With dead ends: 113 [2021-05-02 17:55:05,998 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 17:55:05,998 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 229 SyntacticMatches, 31 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2020 ImplicationChecksByTransitivity, 7469.1ms TimeCoverageRelationStatistics Valid=546, Invalid=16746, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 17:55:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 17:55:06,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2021-05-02 17:55:06,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 73 states have (on average 1.0136986301369864) internal successors, (74), 73 states have internal predecessors, (74), 35 states have call successors, (35), 4 states have call predecessors, (35), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 142 transitions. [2021-05-02 17:55:06,001 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 142 transitions. Word has length 197 [2021-05-02 17:55:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:06,001 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 142 transitions. [2021-05-02 17:55:06,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.088235294117647) internal successors, (74), 36 states have internal predecessors, (74), 33 states have call successors, (35), 3 states have call predecessors, (35), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-05-02 17:55:06,001 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 142 transitions. [2021-05-02 17:55:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 17:55:06,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:06,002 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:06,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:06,214 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:06,215 INFO L82 PathProgramCache]: Analyzing trace with hash -2091093468, now seen corresponding path program 32 times [2021-05-02 17:55:06,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:06,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384171605] [2021-05-02 17:55:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:08,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 17:55:08,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:08,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384171605] [2021-05-02 17:55:08,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384171605] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:08,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405702697] [2021-05-02 17:55:08,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:08,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:55:08,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:08,912 WARN L261 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 323 conjunts are in the unsatisfiable core [2021-05-02 17:55:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:09,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:09,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:10,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2021-05-02 17:55:11,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405702697] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:11,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:11,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 70 [2021-05-02 17:55:11,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72384898] [2021-05-02 17:55:11,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 17:55:11,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:11,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 17:55:11,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=4660, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 17:55:11,546 INFO L87 Difference]: Start difference. First operand 111 states and 142 transitions. Second operand has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:18,471 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2021-05-02 17:55:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 17:55:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 203 [2021-05-02 17:55:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:18,473 INFO L225 Difference]: With dead ends: 116 [2021-05-02 17:55:18,473 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 17:55:18,473 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 236 SyntacticMatches, 32 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2149 ImplicationChecksByTransitivity, 8248.9ms TimeCoverageRelationStatistics Valid=563, Invalid=17797, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 17:55:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 17:55:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2021-05-02 17:55:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 36 states have call successors, (36), 4 states have call predecessors, (36), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 146 transitions. [2021-05-02 17:55:18,494 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 146 transitions. Word has length 203 [2021-05-02 17:55:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:18,495 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 146 transitions. [2021-05-02 17:55:18,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 37 states have internal predecessors, (76), 34 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-05-02 17:55:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 146 transitions. [2021-05-02 17:55:18,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 17:55:18,496 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:18,496 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:18,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 17:55:18,696 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:18,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1963396809, now seen corresponding path program 33 times [2021-05-02 17:55:18,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:18,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036306667] [2021-05-02 17:55:18,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:55:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 17:55:21,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:21,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036306667] [2021-05-02 17:55:21,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036306667] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:21,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299034030] [2021-05-02 17:55:21,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:26,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 17:55:26,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:26,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 333 conjunts are in the unsatisfiable core [2021-05-02 17:55:26,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:26,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:26,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:27,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:28,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3201 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2021-05-02 17:55:29,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299034030] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:29,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:29,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 72 [2021-05-02 17:55:29,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033893704] [2021-05-02 17:55:29,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 17:55:29,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 17:55:29,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=4937, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 17:55:29,090 INFO L87 Difference]: Start difference. First operand 114 states and 146 transitions. Second operand has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:36,727 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2021-05-02 17:55:36,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 17:55:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 209 [2021-05-02 17:55:36,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:36,728 INFO L225 Difference]: With dead ends: 119 [2021-05-02 17:55:36,729 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 17:55:36,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 243 SyntacticMatches, 33 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 8777.0ms TimeCoverageRelationStatistics Valid=580, Invalid=18880, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 17:55:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 17:55:36,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2021-05-02 17:55:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 37 states have call successors, (37), 4 states have call predecessors, (37), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:55:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2021-05-02 17:55:36,732 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 209 [2021-05-02 17:55:36,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:36,732 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2021-05-02 17:55:36,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 38 states have internal predecessors, (78), 35 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 17:55:36,732 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2021-05-02 17:55:36,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 17:55:36,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:36,733 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:36,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:36,939 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:36,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1672534958, now seen corresponding path program 34 times [2021-05-02 17:55:36,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:36,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382757167] [2021-05-02 17:55:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:55:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:55:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 17:55:39,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:39,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382757167] [2021-05-02 17:55:39,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382757167] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:39,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768725521] [2021-05-02 17:55:39,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:55:39,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:55:39,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:55:39,816 WARN L261 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 348 conjunts are in the unsatisfiable core [2021-05-02 17:55:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:55:39,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:39,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:39,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:39,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:39,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:40,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:41,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:42,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:55:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3400 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 1683 trivial. 0 not checked. [2021-05-02 17:55:43,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768725521] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:43,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:55:43,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 74] total 76 [2021-05-02 17:55:43,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061246211] [2021-05-02 17:55:43,095 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 17:55:43,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:55:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 17:55:43,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=5516, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 17:55:43,096 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:55:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:55:51,309 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2021-05-02 17:55:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 17:55:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 215 [2021-05-02 17:55:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:55:51,311 INFO L225 Difference]: With dead ends: 122 [2021-05-02 17:55:51,311 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 17:55:51,312 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 248 SyntacticMatches, 34 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 9616.6ms TimeCoverageRelationStatistics Valid=601, Invalid=20569, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 17:55:51,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 17:55:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-05-02 17:55:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 38 states have call successors, (38), 4 states have call predecessors, (38), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:55:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2021-05-02 17:55:51,314 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 215 [2021-05-02 17:55:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:55:51,314 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2021-05-02 17:55:51,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 17:55:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2021-05-02 17:55:51,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 17:55:51,315 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:55:51,315 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:55:51,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 17:55:51,531 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:55:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:55:51,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1195071277, now seen corresponding path program 35 times [2021-05-02 17:55:51,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:55:51,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939777382] [2021-05-02 17:55:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:55:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:55:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:55:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:55:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:55:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:55:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:55:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:55:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:55:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:55:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:55:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:55:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:55:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:55:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:55:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:55:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:55:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:55:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:55:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:55:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:55:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:55:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:55:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:55:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:55:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:55:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:55:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:55:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:55:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:55:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:55:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:55:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:55:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:55:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:55:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:55:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:55:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:55:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 17:55:54,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:55:54,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939777382] [2021-05-02 17:55:54,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939777382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:55:54,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528572479] [2021-05-02 17:55:54,635 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:56:23,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 17:56:23,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:56:23,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 379 conjunts are in the unsatisfiable core [2021-05-02 17:56:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:56:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:23,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:24,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:25,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:26,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:27,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3605 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2021-05-02 17:56:27,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528572479] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:27,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:56:27,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 76 [2021-05-02 17:56:27,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087542343] [2021-05-02 17:56:27,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 17:56:27,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:56:27,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 17:56:27,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=5515, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 17:56:27,641 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:56:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:56:36,150 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2021-05-02 17:56:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 17:56:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 221 [2021-05-02 17:56:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:56:36,152 INFO L225 Difference]: With dead ends: 125 [2021-05-02 17:56:36,152 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 17:56:36,153 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 231 SyntacticMatches, 61 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2612 ImplicationChecksByTransitivity, 10908.6ms TimeCoverageRelationStatistics Valid=614, Invalid=21142, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 17:56:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 17:56:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-05-02 17:56:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.0123456790123457) internal successors, (82), 81 states have internal predecessors, (82), 39 states have call successors, (39), 4 states have call predecessors, (39), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:56:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 158 transitions. [2021-05-02 17:56:36,155 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 158 transitions. Word has length 221 [2021-05-02 17:56:36,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:56:36,155 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 158 transitions. [2021-05-02 17:56:36,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 40 states have internal predecessors, (82), 37 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-05-02 17:56:36,156 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 158 transitions. [2021-05-02 17:56:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 17:56:36,156 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:56:36,156 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:56:36,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:56:36,357 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:56:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:56:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1236187592, now seen corresponding path program 36 times [2021-05-02 17:56:36,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:56:36,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116240981] [2021-05-02 17:56:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:56:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:56:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:56:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:56:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:56:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:56:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:56:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:56:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:56:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:56:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:56:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:56:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:56:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:56:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:56:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:56:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:56:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:56:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:56:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:56:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:56:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:56:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:56:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:56:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:56:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:56:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:56:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:56:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:56:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:56:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:56:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:56:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:56:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:56:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:56:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:56:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:56:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:56:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:56:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 17:56:39,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:56:39,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116240981] [2021-05-02 17:56:39,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116240981] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:39,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811160802] [2021-05-02 17:56:39,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:56:48,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 17:56:48,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:56:48,198 WARN L261 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 368 conjunts are in the unsatisfiable core [2021-05-02 17:56:48,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:56:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:48,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:50,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:56:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3816 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-05-02 17:56:51,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811160802] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:56:51,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:56:51,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 78] total 80 [2021-05-02 17:56:51,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681793178] [2021-05-02 17:56:51,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 17:56:51,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:56:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 17:56:51,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=6126, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 17:56:51,724 INFO L87 Difference]: Start difference. First operand 123 states and 158 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:57:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:00,841 INFO L93 Difference]: Finished difference Result 128 states and 165 transitions. [2021-05-02 17:57:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 17:57:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 227 [2021-05-02 17:57:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:00,842 INFO L225 Difference]: With dead ends: 128 [2021-05-02 17:57:00,842 INFO L226 Difference]: Without dead ends: 128 [2021-05-02 17:57:00,843 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 262 SyntacticMatches, 36 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 10806.9ms TimeCoverageRelationStatistics Valid=635, Invalid=22927, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 17:57:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-02 17:57:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-05-02 17:57:00,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.0120481927710843) internal successors, (84), 83 states have internal predecessors, (84), 40 states have call successors, (40), 4 states have call predecessors, (40), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2021-05-02 17:57:00,846 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 227 [2021-05-02 17:57:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:00,846 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2021-05-02 17:57:00,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 17:57:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2021-05-02 17:57:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 17:57:00,847 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:00,847 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:01,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 17:57:01,054 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:01,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:01,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1812562909, now seen corresponding path program 37 times [2021-05-02 17:57:01,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:01,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792309729] [2021-05-02 17:57:01,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 17:57:04,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:04,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792309729] [2021-05-02 17:57:04,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792309729] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:04,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090115326] [2021-05-02 17:57:04,473 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:57:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:04,570 WARN L261 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 373 conjunts are in the unsatisfiable core [2021-05-02 17:57:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:57:04,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:04,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:05,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:07,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4033 backedges. 0 proven. 2035 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2021-05-02 17:57:08,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090115326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:08,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:08,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 80 [2021-05-02 17:57:08,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712750130] [2021-05-02 17:57:08,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 17:57:08,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:08,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 17:57:08,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=6125, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 17:57:08,477 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:18,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:18,309 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2021-05-02 17:57:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 17:57:18,310 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 233 [2021-05-02 17:57:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:18,311 INFO L225 Difference]: With dead ends: 131 [2021-05-02 17:57:18,311 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 17:57:18,312 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 271 SyntacticMatches, 37 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 11598.5ms TimeCoverageRelationStatistics Valid=648, Invalid=23532, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 17:57:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 17:57:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2021-05-02 17:57:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 41 states have call successors, (41), 4 states have call predecessors, (41), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 166 transitions. [2021-05-02 17:57:18,315 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 166 transitions. Word has length 233 [2021-05-02 17:57:18,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:18,315 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 166 transitions. [2021-05-02 17:57:18,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.075) internal successors, (86), 42 states have internal predecessors, (86), 39 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-05-02 17:57:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 166 transitions. [2021-05-02 17:57:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-05-02 17:57:18,316 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:18,316 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:18,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-05-02 17:57:18,530 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:18,530 INFO L82 PathProgramCache]: Analyzing trace with hash -331075134, now seen corresponding path program 38 times [2021-05-02 17:57:18,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:18,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576022129] [2021-05-02 17:57:18,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:57:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 17:57:22,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:22,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576022129] [2021-05-02 17:57:22,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576022129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:22,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763708879] [2021-05-02 17:57:22,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:57:22,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 17:57:22,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:57:22,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 383 conjunts are in the unsatisfiable core [2021-05-02 17:57:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:57:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:22,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:23,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:24,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:25,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4256 backedges. 0 proven. 2147 refuted. 0 times theorem prover too weak. 2109 trivial. 0 not checked. [2021-05-02 17:57:26,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763708879] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:26,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:26,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 82 [2021-05-02 17:57:26,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791373188] [2021-05-02 17:57:26,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 17:57:26,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:26,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 17:57:26,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=6442, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 17:57:26,497 INFO L87 Difference]: Start difference. First operand 129 states and 166 transitions. Second operand has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:57:37,524 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-05-02 17:57:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 17:57:37,526 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 239 [2021-05-02 17:57:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:57:37,529 INFO L225 Difference]: With dead ends: 134 [2021-05-02 17:57:37,529 INFO L226 Difference]: Without dead ends: 134 [2021-05-02 17:57:37,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 278 SyntacticMatches, 38 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3007 ImplicationChecksByTransitivity, 12644.5ms TimeCoverageRelationStatistics Valid=665, Invalid=24775, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 17:57:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-02 17:57:37,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-05-02 17:57:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 42 states have call successors, (42), 4 states have call predecessors, (42), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:57:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 170 transitions. [2021-05-02 17:57:37,533 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 170 transitions. Word has length 239 [2021-05-02 17:57:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:57:37,533 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 170 transitions. [2021-05-02 17:57:37,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.0731707317073171) internal successors, (88), 43 states have internal predecessors, (88), 40 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 17:57:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 170 transitions. [2021-05-02 17:57:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-05-02 17:57:37,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:57:37,545 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:57:37,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 17:57:37,745 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:57:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:57:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1057218585, now seen corresponding path program 39 times [2021-05-02 17:57:37,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:57:37,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021401405] [2021-05-02 17:57:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:57:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:57:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:57:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:57:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:57:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:57:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:57:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:57:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:57:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:57:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:57:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:57:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:57:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:57:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:57:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:57:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:57:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:57:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:57:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:57:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:57:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:57:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:57:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:57:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:57:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:57:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:57:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:57:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:57:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:57:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:57:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:57:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:57:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:57:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:57:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:57:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:57:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:57:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:57:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:57:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:57:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:57:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 17:57:41,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:57:41,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021401405] [2021-05-02 17:57:41,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021401405] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:41,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316085758] [2021-05-02 17:57:41,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:57:46,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 17:57:46,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:57:46,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 400 conjunts are in the unsatisfiable core [2021-05-02 17:57:46,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:57:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:47,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:48,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:49,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:57:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 0 proven. 2262 refuted. 0 times theorem prover too weak. 2223 trivial. 0 not checked. [2021-05-02 17:57:50,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316085758] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:57:50,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:57:50,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 84 [2021-05-02 17:57:50,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27993590] [2021-05-02 17:57:50,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 17:57:50,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:57:50,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 17:57:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=6767, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 17:57:50,799 INFO L87 Difference]: Start difference. First operand 132 states and 170 transitions. Second operand has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:58:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:58:02,808 INFO L93 Difference]: Finished difference Result 137 states and 177 transitions. [2021-05-02 17:58:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 17:58:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 245 [2021-05-02 17:58:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:58:02,810 INFO L225 Difference]: With dead ends: 137 [2021-05-02 17:58:02,810 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 17:58:02,811 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 283 SyntacticMatches, 41 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 13807.2ms TimeCoverageRelationStatistics Valid=682, Invalid=26050, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 17:58:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 17:58:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2021-05-02 17:58:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 89 states have (on average 1.0112359550561798) internal successors, (90), 89 states have internal predecessors, (90), 43 states have call successors, (43), 4 states have call predecessors, (43), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2021-05-02 17:58:02,813 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 245 [2021-05-02 17:58:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:58:02,814 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2021-05-02 17:58:02,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 44 states have internal predecessors, (90), 41 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 17:58:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2021-05-02 17:58:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-05-02 17:58:02,815 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:58:02,815 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:58:03,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:03,019 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:58:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:58:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1596973492, now seen corresponding path program 40 times [2021-05-02 17:58:03,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:58:03,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204010153] [2021-05-02 17:58:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:58:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:58:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:58:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:58:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:58:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:58:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:58:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:58:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:58:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:58:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:58:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:58:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:58:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:58:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:58:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:58:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:58:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:58:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:58:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:58:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:58:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:58:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:58:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:58:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:58:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:58:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:58:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:58:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:58:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:58:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:58:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:58:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:58:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:58:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:58:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:58:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:58:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:58:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:58:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:58:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:58:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 17:58:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 17:58:07,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:58:07,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204010153] [2021-05-02 17:58:07,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204010153] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:07,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380397602] [2021-05-02 17:58:07,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:07,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 17:58:07,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 17:58:07,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 408 conjunts are in the unsatisfiable core [2021-05-02 17:58:07,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:58:07,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:07,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:09,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:10,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:11,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:12,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:58:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 2380 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2021-05-02 17:58:13,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380397602] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:13,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:58:13,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 86] total 88 [2021-05-02 17:58:13,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274784675] [2021-05-02 17:58:13,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 17:58:13,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:58:13,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 17:58:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=7442, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 17:58:13,031 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:58:26,442 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2021-05-02 17:58:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 17:58:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 251 [2021-05-02 17:58:26,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:58:26,444 INFO L225 Difference]: With dead ends: 140 [2021-05-02 17:58:26,444 INFO L226 Difference]: Without dead ends: 140 [2021-05-02 17:58:26,445 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 290 SyntacticMatches, 40 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3329 ImplicationChecksByTransitivity, 15548.8ms TimeCoverageRelationStatistics Valid=703, Invalid=28027, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 17:58:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-02 17:58:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2021-05-02 17:58:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 91 states have (on average 1.010989010989011) internal successors, (92), 91 states have internal predecessors, (92), 44 states have call successors, (44), 4 states have call predecessors, (44), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 17:58:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 178 transitions. [2021-05-02 17:58:26,447 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 178 transitions. Word has length 251 [2021-05-02 17:58:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:58:26,448 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 178 transitions. [2021-05-02 17:58:26,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-05-02 17:58:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 178 transitions. [2021-05-02 17:58:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-05-02 17:58:26,449 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:58:26,449 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:58:26,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 17:58:26,665 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:58:26,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:58:26,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1677917425, now seen corresponding path program 41 times [2021-05-02 17:58:26,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:58:26,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682226553] [2021-05-02 17:58:26,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:58:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:58:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 17:58:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 17:58:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 17:58:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 17:58:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 17:58:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 17:58:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 17:58:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 17:58:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 17:58:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 17:58:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 17:58:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 17:58:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 17:58:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 17:58:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 17:58:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 17:58:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 17:58:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 17:58:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 17:58:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 17:58:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 17:58:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 17:58:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 17:58:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 17:58:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 17:58:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 17:58:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 17:58:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 17:58:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 17:58:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 17:58:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 17:58:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 17:58:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 17:58:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 17:58:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 17:58:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 17:58:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 17:58:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 17:58:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 17:58:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 17:58:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 17:58:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:58:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 17:58:31,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:58:31,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682226553] [2021-05-02 17:58:31,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682226553] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:58:31,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782460496] [2021-05-02 17:58:31,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:00:13,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 18:00:13,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:00:13,329 WARN L261 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 18:00:13,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:00:13,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:13,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:14,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:15,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:16,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:17,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:18,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:19,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:20,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4961 backedges. 0 proven. 2501 refuted. 0 times theorem prover too weak. 2460 trivial. 0 not checked. [2021-05-02 18:00:21,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782460496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:00:21,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:00:21,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 86] total 88 [2021-05-02 18:00:21,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912834956] [2021-05-02 18:00:21,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 18:00:21,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:00:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 18:00:21,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=7441, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 18:00:21,858 INFO L87 Difference]: Start difference. First operand 138 states and 178 transitions. Second operand has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 18:00:38,293 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2021-05-02 18:00:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:00:39,085 INFO L93 Difference]: Finished difference Result 143 states and 185 transitions. [2021-05-02 18:00:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-02 18:00:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 257 [2021-05-02 18:00:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:00:39,087 INFO L225 Difference]: With dead ends: 143 [2021-05-02 18:00:39,087 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 18:00:39,088 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 269 SyntacticMatches, 71 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3550 ImplicationChecksByTransitivity, 20611.5ms TimeCoverageRelationStatistics Valid=716, Invalid=28696, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 18:00:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 18:00:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-05-02 18:00:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 93 states have (on average 1.010752688172043) internal successors, (94), 93 states have internal predecessors, (94), 45 states have call successors, (45), 4 states have call predecessors, (45), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:00:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 182 transitions. [2021-05-02 18:00:39,091 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 182 transitions. Word has length 257 [2021-05-02 18:00:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:00:39,091 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 182 transitions. [2021-05-02 18:00:39,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 1.0681818181818181) internal successors, (94), 46 states have internal predecessors, (94), 43 states have call successors, (45), 3 states have call predecessors, (45), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-05-02 18:00:39,091 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2021-05-02 18:00:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-05-02 18:00:39,092 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:00:39,092 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:00:39,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-05-02 18:00:39,300 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:00:39,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:00:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 964398038, now seen corresponding path program 42 times [2021-05-02 18:00:39,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:00:39,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103191965] [2021-05-02 18:00:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:00:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:00:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:00:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:00:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:00:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:00:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:00:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:00:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:00:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:00:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:00:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:00:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:00:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:00:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:00:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:00:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:00:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:00:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:00:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:00:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:00:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:00:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:00:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:00:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:00:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:00:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:00:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:00:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:00:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:00:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:00:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:00:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:00:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:00:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:00:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:00:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:00:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:00:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:00:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:00:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:00:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:00:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:00:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:00:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:00:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 18:00:45,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:00:45,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103191965] [2021-05-02 18:00:45,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103191965] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:00:45,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123004314] [2021-05-02 18:00:45,652 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:00:58,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 18:00:58,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:00:58,610 WARN L261 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 432 conjunts are in the unsatisfiable core [2021-05-02 18:00:58,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:00:58,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:58,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:58,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:58,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:58,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:00:59,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:00,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:01,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:02,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:03,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:04,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5208 backedges. 0 proven. 2625 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2021-05-02 18:01:05,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123004314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:05,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:01:05,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 90 [2021-05-02 18:01:05,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110241748] [2021-05-02 18:01:05,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 90 states [2021-05-02 18:01:05,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:01:05,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-05-02 18:01:05,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=7790, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 18:01:05,866 INFO L87 Difference]: Start difference. First operand 141 states and 182 transitions. Second operand has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:01:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:01:23,343 INFO L93 Difference]: Finished difference Result 146 states and 189 transitions. [2021-05-02 18:01:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 18:01:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 263 [2021-05-02 18:01:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:01:23,345 INFO L225 Difference]: With dead ends: 146 [2021-05-02 18:01:23,345 INFO L226 Difference]: Without dead ends: 146 [2021-05-02 18:01:23,347 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 302 SyntacticMatches, 46 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3665 ImplicationChecksByTransitivity, 20753.8ms TimeCoverageRelationStatistics Valid=733, Invalid=30067, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 18:01:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-05-02 18:01:23,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2021-05-02 18:01:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 46 states have call successors, (46), 4 states have call predecessors, (46), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:23,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 186 transitions. [2021-05-02 18:01:23,349 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 186 transitions. Word has length 263 [2021-05-02 18:01:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:01:23,350 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 186 transitions. [2021-05-02 18:01:23,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 90 states, 90 states have (on average 1.0666666666666667) internal successors, (96), 47 states have internal predecessors, (96), 44 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-05-02 18:01:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2021-05-02 18:01:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-05-02 18:01:23,351 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:01:23,351 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:01:23,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:23,551 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:01:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:01:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash 465869563, now seen corresponding path program 43 times [2021-05-02 18:01:23,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:01:23,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756918602] [2021-05-02 18:01:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:01:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:01:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:29,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:01:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:01:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:29,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:01:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:01:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:01:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:01:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:01:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:01:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:01:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:01:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:01:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:01:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:01:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:01:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:01:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:01:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:01:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:01:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:01:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:01:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:01:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:01:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:01:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:01:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:01:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:01:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:01:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:01:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:01:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:01:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:01:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:01:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:01:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:01:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:01:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:01:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:01:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:01:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:01:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:01:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:01:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:01:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:01:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 18:01:30,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:01:30,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756918602] [2021-05-02 18:01:30,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756918602] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:30,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133605893] [2021-05-02 18:01:30,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:01:30,231 WARN L261 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 433 conjunts are in the unsatisfiable core [2021-05-02 18:01:30,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:01:30,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:30,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:31,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:32,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:33,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:34,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:35,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:36,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:37,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:38,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:01:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 0 proven. 2752 refuted. 0 times theorem prover too weak. 2709 trivial. 0 not checked. [2021-05-02 18:01:38,122 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133605893] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:01:38,122 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:01:38,122 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 92 [2021-05-02 18:01:38,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583616265] [2021-05-02 18:01:38,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 18:01:38,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:01:38,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 18:01:38,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=8147, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 18:01:38,123 INFO L87 Difference]: Start difference. First operand 144 states and 186 transitions. Second operand has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:01:57,581 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2021-05-02 18:01:57,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 18:01:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 269 [2021-05-02 18:01:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:01:57,584 INFO L225 Difference]: With dead ends: 149 [2021-05-02 18:01:57,584 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 18:01:57,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 313 SyntacticMatches, 43 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3832 ImplicationChecksByTransitivity, 22472.8ms TimeCoverageRelationStatistics Valid=750, Invalid=31470, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 18:01:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 18:01:57,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2021-05-02 18:01:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 states have internal predecessors, (98), 47 states have call successors, (47), 4 states have call predecessors, (47), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:01:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2021-05-02 18:01:57,588 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 269 [2021-05-02 18:01:57,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:01:57,588 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2021-05-02 18:01:57,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 1.065217391304348) internal successors, (98), 48 states have internal predecessors, (98), 45 states have call successors, (47), 3 states have call predecessors, (47), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-05-02 18:01:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2021-05-02 18:01:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-05-02 18:01:57,589 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:01:57,589 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:01:57,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:01:57,797 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:01:57,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:01:57,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2045969824, now seen corresponding path program 44 times [2021-05-02 18:01:57,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:01:57,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979670231] [2021-05-02 18:01:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:01:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:02:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:02:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:02:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:02:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:02:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:02:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:02:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:02:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:02:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:02:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:02:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:02:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:02:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:02:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:02:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:02:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:02:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:02:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:02:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:02:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:02:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:02:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:02:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:02:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:02:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:02:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:02:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:02:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:02:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:02:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:02:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:02:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:02:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:02:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:02:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:02:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:02:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:02:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:02:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:02:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:02:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:02:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:02:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:02:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:02:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 18:02:04,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:02:04,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979670231] [2021-05-02 18:02:04,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979670231] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:04,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279068807] [2021-05-02 18:02:04,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:02:04,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:02:04,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:02:04,982 WARN L261 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 443 conjunts are in the unsatisfiable core [2021-05-02 18:02:04,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:02:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:05,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:06,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:07,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:09,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:10,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:11,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:12,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:13,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:13,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5720 backedges. 0 proven. 2882 refuted. 0 times theorem prover too weak. 2838 trivial. 0 not checked. [2021-05-02 18:02:13,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279068807] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:13,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:02:13,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 92] total 94 [2021-05-02 18:02:13,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289596693] [2021-05-02 18:02:13,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 18:02:13,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:02:13,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 18:02:13,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=8512, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 18:02:13,278 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:02:34,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:02:34,088 INFO L93 Difference]: Finished difference Result 152 states and 197 transitions. [2021-05-02 18:02:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-02 18:02:34,090 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 275 [2021-05-02 18:02:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:02:34,091 INFO L225 Difference]: With dead ends: 152 [2021-05-02 18:02:34,091 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 18:02:34,093 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 320 SyntacticMatches, 44 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4009 ImplicationChecksByTransitivity, 23647.3ms TimeCoverageRelationStatistics Valid=767, Invalid=32905, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 18:02:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 18:02:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2021-05-02 18:02:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 48 states have call successors, (48), 4 states have call predecessors, (48), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:02:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2021-05-02 18:02:34,095 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 275 [2021-05-02 18:02:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:02:34,096 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2021-05-02 18:02:34,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 1.0638297872340425) internal successors, (100), 49 states have internal predecessors, (100), 46 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-05-02 18:02:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2021-05-02 18:02:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-05-02 18:02:34,097 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:02:34,097 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:02:34,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-02 18:02:34,314 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:02:34,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:02:34,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1764194821, now seen corresponding path program 45 times [2021-05-02 18:02:34,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:02:34,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365152114] [2021-05-02 18:02:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:02:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:02:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:02:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:02:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:02:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:02:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:02:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:02:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:02:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:02:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:02:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:02:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:02:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:02:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:02:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:02:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:02:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:02:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:02:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:02:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:02:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:02:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:02:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:02:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:02:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:02:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:02:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:02:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:02:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:02:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:02:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:02:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:02:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:02:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:02:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:02:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:02:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:02:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:02:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:02:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:02:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:02:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:02:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:02:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:02:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:02:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:02:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:02:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 18:02:42,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:02:42,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365152114] [2021-05-02 18:02:42,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365152114] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:02:42,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376897435] [2021-05-02 18:02:42,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:02:58,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 18:02:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:02:58,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 481 conjunts are in the unsatisfiable core [2021-05-02 18:02:58,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:02:58,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:58,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:02:59,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:00,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:02,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:03,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:04,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:05,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:06,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:07,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:10,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:11,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5985 backedges. 0 proven. 3015 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2021-05-02 18:03:11,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376897435] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:03:11,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:03:11,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 96 [2021-05-02 18:03:11,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809711576] [2021-05-02 18:03:11,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 96 states [2021-05-02 18:03:11,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:03:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-05-02 18:03:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=8885, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 18:03:11,237 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:03:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:03:36,317 INFO L93 Difference]: Finished difference Result 155 states and 201 transitions. [2021-05-02 18:03:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 18:03:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 281 [2021-05-02 18:03:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:03:36,320 INFO L225 Difference]: With dead ends: 155 [2021-05-02 18:03:36,320 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 18:03:36,322 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 304 SyntacticMatches, 68 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4234 ImplicationChecksByTransitivity, 30502.8ms TimeCoverageRelationStatistics Valid=784, Invalid=34372, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 18:03:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 18:03:36,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2021-05-02 18:03:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 101 states have (on average 1.00990099009901) internal successors, (102), 101 states have internal predecessors, (102), 49 states have call successors, (49), 4 states have call predecessors, (49), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:03:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2021-05-02 18:03:36,325 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 281 [2021-05-02 18:03:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:03:36,325 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2021-05-02 18:03:36,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 96 states, 96 states have (on average 1.0625) internal successors, (102), 50 states have internal predecessors, (102), 47 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-05-02 18:03:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2021-05-02 18:03:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-05-02 18:03:36,326 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:03:36,326 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:03:36,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 18:03:36,533 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:03:36,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:03:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1619716586, now seen corresponding path program 46 times [2021-05-02 18:03:36,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:03:36,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847293775] [2021-05-02 18:03:36,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:03:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:03:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:03:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:03:46,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:03:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:03:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:03:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:03:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:03:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:03:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:03:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:03:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:03:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:03:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:03:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:03:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:03:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:03:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:03:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:03:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:03:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:03:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:03:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:03:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:03:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:03:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:03:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:03:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:03:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:03:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:03:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:03:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:03:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:03:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:03:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:03:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:03:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:03:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:03:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:03:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:03:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:03:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:03:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:03:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:03:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:03:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:03:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 18:03:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:03:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 18:03:46,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:03:46,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847293775] [2021-05-02 18:03:46,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847293775] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:03:46,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823807884] [2021-05-02 18:03:46,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:03:46,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 18:03:46,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:03:46,526 WARN L261 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 468 conjunts are in the unsatisfiable core [2021-05-02 18:03:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:03:46,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:46,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:47,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:48,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:50,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:51,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:52,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:53,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:54,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:55,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:56,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:57,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:58,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:58,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:03:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6256 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 3105 trivial. 0 not checked. [2021-05-02 18:03:58,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823807884] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:03:58,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:03:58,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 98] total 100 [2021-05-02 18:03:58,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434483976] [2021-05-02 18:03:58,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 18:03:58,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:03:58,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 18:03:58,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=9656, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 18:03:58,562 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:04:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:04:26,406 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2021-05-02 18:04:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 18:04:26,408 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 287 [2021-05-02 18:04:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:04:26,409 INFO L225 Difference]: With dead ends: 158 [2021-05-02 18:04:26,409 INFO L226 Difference]: Without dead ends: 158 [2021-05-02 18:04:26,411 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 332 SyntacticMatches, 46 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4379 ImplicationChecksByTransitivity, 32768.5ms TimeCoverageRelationStatistics Valid=805, Invalid=36637, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 18:04:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-05-02 18:04:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2021-05-02 18:04:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.0097087378640777) internal successors, (104), 103 states have internal predecessors, (104), 50 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-05-02 18:04:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 202 transitions. [2021-05-02 18:04:26,414 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 202 transitions. Word has length 287 [2021-05-02 18:04:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:04:26,414 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 202 transitions. [2021-05-02 18:04:26,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 1.06) internal successors, (106), 52 states have internal predecessors, (106), 49 states have call successors, (51), 4 states have call predecessors, (51), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 18:04:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 202 transitions. [2021-05-02 18:04:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-05-02 18:04:26,415 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:04:26,415 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:04:26,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-05-02 18:04:26,629 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:04:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:04:26,629 INFO L82 PathProgramCache]: Analyzing trace with hash 659692047, now seen corresponding path program 47 times [2021-05-02 18:04:26,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:04:26,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848178700] [2021-05-02 18:04:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:04:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:04:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-05-02 18:04:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-05-02 18:04:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 18:04:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 18:04:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-05-02 18:04:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 18:04:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 18:04:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 18:04:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 18:04:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-05-02 18:04:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-05-02 18:04:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-05-02 18:04:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-05-02 18:04:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-05-02 18:04:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-05-02 18:04:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-05-02 18:04:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-05-02 18:04:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-05-02 18:04:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-05-02 18:04:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-05-02 18:04:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-05-02 18:04:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-05-02 18:04:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-05-02 18:04:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-05-02 18:04:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-05-02 18:04:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-05-02 18:04:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-05-02 18:04:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-05-02 18:04:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-05-02 18:04:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-05-02 18:04:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-05-02 18:04:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-05-02 18:04:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-05-02 18:04:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-05-02 18:04:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-05-02 18:04:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-05-02 18:04:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-05-02 18:04:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-05-02 18:04:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-05-02 18:04:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-05-02 18:04:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-05-02 18:04:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-05-02 18:04:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-05-02 18:04:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-05-02 18:04:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-05-02 18:04:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-05-02 18:04:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-05-02 18:04:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:04:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6533 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2021-05-02 18:04:37,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:04:37,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848178700] [2021-05-02 18:04:37,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848178700] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:04:37,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421537002] [2021-05-02 18:04:37,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true