/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:03:56,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:03:56,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:03:56,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:03:56,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:03:56,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:03:56,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:03:56,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:03:56,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:03:56,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:03:56,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:03:56,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:03:56,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:03:56,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:03:56,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:03:56,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:03:56,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:03:56,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:03:56,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:03:56,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:03:56,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:03:56,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:03:56,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:03:56,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:03:56,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:03:56,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:03:56,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:03:56,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:03:56,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:03:56,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:03:56,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:03:56,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:03:56,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:03:56,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:03:56,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:03:56,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:03:56,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:03:56,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:03:56,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:03:56,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:03:56,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:03:56,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:03:56,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:03:56,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:03:56,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:03:56,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:03:56,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:03:56,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:03:56,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:03:56,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:03:56,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:03:56,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:03:56,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:03:56,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:03:56,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:03:56,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:03:56,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:03:56,919 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:03:56,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:03:56,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:03:56,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:03:56,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:03:56,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:03:56,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:03:56,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:03:56,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:03:56,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:03:56,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:03:56,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:03:56,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:03:56,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:03:56,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:03:57,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:03:57,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:03:57,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:03:57,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:03:57,208 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:03:57,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:03:57,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1c9ee356/4525918b5e99481d856e64623368adad/FLAG982dd9bf8 [2020-10-13 15:03:57,794 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:03:57,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:03:57,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1c9ee356/4525918b5e99481d856e64623368adad/FLAG982dd9bf8 [2020-10-13 15:03:58,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1c9ee356/4525918b5e99481d856e64623368adad [2020-10-13 15:03:58,052 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:03:58,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:03:58,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:03:58,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:03:58,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:03:58,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:03:58" (1/1) ... [2020-10-13 15:03:58,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc2cc11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:58, skipping insertion in model container [2020-10-13 15:03:58,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:03:58" (1/1) ... [2020-10-13 15:03:58,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:03:58,180 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:03:58,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:03:58,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:03:59,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:03:59,566 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:03:59,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59 WrapperNode [2020-10-13 15:03:59,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:03:59,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:03:59,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:03:59,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:03:59,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... [2020-10-13 15:03:59,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:03:59,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:03:59,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:03:59,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:03:59,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-13 15:03:59,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:03:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:03:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:03:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:03:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:03:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:03:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:03:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:03:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:03:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:03:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:03:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:03:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:03:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:03:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:03:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:03:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:04:02,066 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:04:02,067 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:04:02,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:04:02 BoogieIcfgContainer [2020-10-13 15:04:02,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:04:02,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:04:02,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:04:02,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:04:02,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:03:58" (1/3) ... [2020-10-13 15:04:02,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22681b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:04:02, skipping insertion in model container [2020-10-13 15:04:02,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:03:59" (2/3) ... [2020-10-13 15:04:02,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22681b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:04:02, skipping insertion in model container [2020-10-13 15:04:02,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:04:02" (3/3) ... [2020-10-13 15:04:02,098 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 15:04:02,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:04:02,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:04:02,136 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:04:02,172 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:04:02,173 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:04:02,173 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:04:02,173 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:04:02,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:04:02,173 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:04:02,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:04:02,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:04:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states. [2020-10-13 15:04:02,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 15:04:02,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:02,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:02,256 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:02,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:02,265 INFO L82 PathProgramCache]: Analyzing trace with hash -331581758, now seen corresponding path program 1 times [2020-10-13 15:04:02,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:02,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376921339] [2020-10-13 15:04:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:03,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:06,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:08,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:08,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 15:04:08,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:04:08,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 15:04:08,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:08,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:04:08,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 15:04:08,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:04:09,047 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:04:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:09,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:09,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:09,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:09,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 15:04:09,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:09,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:09,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:09,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376921339] [2020-10-13 15:04:09,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:09,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:09,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083056162] [2020-10-13 15:04:09,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:09,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:09,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:09,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:09,325 INFO L87 Difference]: Start difference. First operand 652 states. Second operand 5 states. [2020-10-13 15:04:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:16,096 INFO L93 Difference]: Finished difference Result 1910 states and 3392 transitions. [2020-10-13 15:04:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:04:16,100 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-13 15:04:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:16,128 INFO L225 Difference]: With dead ends: 1910 [2020-10-13 15:04:16,128 INFO L226 Difference]: Without dead ends: 1265 [2020-10-13 15:04:16,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:04:16,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-13 15:04:16,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1263. [2020-10-13 15:04:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-10-13 15:04:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1975 transitions. [2020-10-13 15:04:16,319 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1975 transitions. Word has length 254 [2020-10-13 15:04:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:16,320 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1975 transitions. [2020-10-13 15:04:16,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:16,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1975 transitions. [2020-10-13 15:04:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 15:04:16,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:16,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:16,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:04:16,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash -715996619, now seen corresponding path program 1 times [2020-10-13 15:04:16,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:16,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648172608] [2020-10-13 15:04:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:16,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:17,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:17,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:19,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:19,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:21,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:21,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 15:04:21,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:04:21,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 15:04:21,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:04:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:04:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:22,013 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:04:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:22,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:22,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:22,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:22,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 15:04:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:22,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648172608] [2020-10-13 15:04:22,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:22,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:22,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143587173] [2020-10-13 15:04:22,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:22,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:22,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:22,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:22,198 INFO L87 Difference]: Start difference. First operand 1263 states and 1975 transitions. Second operand 4 states. [2020-10-13 15:04:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:29,151 INFO L93 Difference]: Finished difference Result 3744 states and 5854 transitions. [2020-10-13 15:04:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:04:29,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 256 [2020-10-13 15:04:29,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:29,165 INFO L225 Difference]: With dead ends: 3744 [2020-10-13 15:04:29,165 INFO L226 Difference]: Without dead ends: 2506 [2020-10-13 15:04:29,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2020-10-13 15:04:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1276. [2020-10-13 15:04:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1276 states. [2020-10-13 15:04:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1994 transitions. [2020-10-13 15:04:29,255 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1994 transitions. Word has length 256 [2020-10-13 15:04:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:29,255 INFO L479 AbstractCegarLoop]: Abstraction has 1276 states and 1994 transitions. [2020-10-13 15:04:29,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1994 transitions. [2020-10-13 15:04:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-13 15:04:29,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:29,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:29,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:04:29,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:29,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2048100080, now seen corresponding path program 1 times [2020-10-13 15:04:29,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:29,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088804040] [2020-10-13 15:04:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:29,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:34,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-13 15:04:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:04:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 15:04:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:04:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 15:04:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:35,028 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:04:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:35,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:35,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:35,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:35,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:35,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 15:04:35,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:35,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:35,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:35,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:35,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088804040] [2020-10-13 15:04:35,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:35,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:35,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487756579] [2020-10-13 15:04:35,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:35,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:35,267 INFO L87 Difference]: Start difference. First operand 1276 states and 1994 transitions. Second operand 5 states. [2020-10-13 15:04:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:41,262 INFO L93 Difference]: Finished difference Result 3695 states and 5765 transitions. [2020-10-13 15:04:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:04:41,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-13 15:04:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:41,276 INFO L225 Difference]: With dead ends: 3695 [2020-10-13 15:04:41,276 INFO L226 Difference]: Without dead ends: 2485 [2020-10-13 15:04:41,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:04:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2020-10-13 15:04:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2020-10-13 15:04:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2020-10-13 15:04:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3859 transitions. [2020-10-13 15:04:41,409 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3859 transitions. Word has length 256 [2020-10-13 15:04:41,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:41,410 INFO L479 AbstractCegarLoop]: Abstraction has 2483 states and 3859 transitions. [2020-10-13 15:04:41,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:41,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3859 transitions. [2020-10-13 15:04:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-13 15:04:41,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:41,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:41,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:04:41,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:41,430 INFO L82 PathProgramCache]: Analyzing trace with hash -2052232667, now seen corresponding path program 1 times [2020-10-13 15:04:41,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:41,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540388076] [2020-10-13 15:04:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:42,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:43,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:46,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-13 15:04:46,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:04:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 15:04:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:04:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:04:46,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:46,972 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:04:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:47,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:47,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:04:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:47,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:47,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540388076] [2020-10-13 15:04:47,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:47,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:04:47,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367291706] [2020-10-13 15:04:47,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:04:47,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:47,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:04:47,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:47,080 INFO L87 Difference]: Start difference. First operand 2483 states and 3859 transitions. Second operand 4 states. [2020-10-13 15:04:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:53,819 INFO L93 Difference]: Finished difference Result 7371 states and 11451 transitions. [2020-10-13 15:04:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:04:53,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2020-10-13 15:04:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:53,841 INFO L225 Difference]: With dead ends: 7371 [2020-10-13 15:04:53,841 INFO L226 Difference]: Without dead ends: 4927 [2020-10-13 15:04:53,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:04:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2020-10-13 15:04:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 2505. [2020-10-13 15:04:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2505 states. [2020-10-13 15:04:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3886 transitions. [2020-10-13 15:04:53,997 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3886 transitions. Word has length 258 [2020-10-13 15:04:53,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:53,998 INFO L479 AbstractCegarLoop]: Abstraction has 2505 states and 3886 transitions. [2020-10-13 15:04:53,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:04:53,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3886 transitions. [2020-10-13 15:04:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 15:04:54,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:54,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:54,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:04:54,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash -187662173, now seen corresponding path program 1 times [2020-10-13 15:04:54,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:54,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248369658] [2020-10-13 15:04:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:55,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:59,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 15:04:59,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:04:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 15:04:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:04:59,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 15:04:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:59,610 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:04:59,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:04:59,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:59,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:59,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248369658] [2020-10-13 15:04:59,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:59,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:59,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202228320] [2020-10-13 15:04:59,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:59,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:59,739 INFO L87 Difference]: Start difference. First operand 2505 states and 3886 transitions. Second operand 5 states. [2020-10-13 15:05:05,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:05,500 INFO L93 Difference]: Finished difference Result 7251 states and 11232 transitions. [2020-10-13 15:05:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:05,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-13 15:05:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:05,521 INFO L225 Difference]: With dead ends: 7251 [2020-10-13 15:05:05,522 INFO L226 Difference]: Without dead ends: 4893 [2020-10-13 15:05:05,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2020-10-13 15:05:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4891. [2020-10-13 15:05:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4891 states. [2020-10-13 15:05:05,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 7544 transitions. [2020-10-13 15:05:05,856 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 7544 transitions. Word has length 260 [2020-10-13 15:05:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:05,858 INFO L479 AbstractCegarLoop]: Abstraction has 4891 states and 7544 transitions. [2020-10-13 15:05:05,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 7544 transitions. [2020-10-13 15:05:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-13 15:05:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:05,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:05,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:05:05,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash 595780050, now seen corresponding path program 1 times [2020-10-13 15:05:05,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:05,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268434442] [2020-10-13 15:05:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:06,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:09,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:11,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:05:11,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:05:11,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:11,526 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:05:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:11,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:11,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:11,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:11,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:05:11,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:11,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:11,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:11,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:11,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268434442] [2020-10-13 15:05:11,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:11,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:05:11,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537997651] [2020-10-13 15:05:11,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:05:11,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:11,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:05:11,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:05:11,627 INFO L87 Difference]: Start difference. First operand 4891 states and 7544 transitions. Second operand 5 states. [2020-10-13 15:05:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:17,708 INFO L93 Difference]: Finished difference Result 13374 states and 20504 transitions. [2020-10-13 15:05:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:17,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-13 15:05:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:17,746 INFO L225 Difference]: With dead ends: 13374 [2020-10-13 15:05:17,746 INFO L226 Difference]: Without dead ends: 9076 [2020-10-13 15:05:17,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9076 states. [2020-10-13 15:05:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9076 to 5351. [2020-10-13 15:05:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5351 states. [2020-10-13 15:05:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 8332 transitions. [2020-10-13 15:05:18,211 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 8332 transitions. Word has length 260 [2020-10-13 15:05:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:18,211 INFO L479 AbstractCegarLoop]: Abstraction has 5351 states and 8332 transitions. [2020-10-13 15:05:18,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:18,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 8332 transitions. [2020-10-13 15:05:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 15:05:18,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:18,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:18,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:05:18,224 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1576745499, now seen corresponding path program 1 times [2020-10-13 15:05:18,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:18,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136336870] [2020-10-13 15:05:18,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:18,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:19,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:23,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:23,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:05:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:23,755 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:05:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:23,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:23,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:23,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:23,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:05:23,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:23,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:23,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:23,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136336870] [2020-10-13 15:05:23,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:23,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:05:23,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273050319] [2020-10-13 15:05:23,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:05:23,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:23,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:05:23,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:23,835 INFO L87 Difference]: Start difference. First operand 5351 states and 8332 transitions. Second operand 4 states. [2020-10-13 15:05:27,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:27,690 INFO L93 Difference]: Finished difference Result 13959 states and 21353 transitions. [2020-10-13 15:05:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:05:27,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 262 [2020-10-13 15:05:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:27,713 INFO L225 Difference]: With dead ends: 13959 [2020-10-13 15:05:27,713 INFO L226 Difference]: Without dead ends: 9651 [2020-10-13 15:05:27,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9651 states. [2020-10-13 15:05:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9651 to 5457. [2020-10-13 15:05:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5457 states. [2020-10-13 15:05:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 8475 transitions. [2020-10-13 15:05:28,140 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 8475 transitions. Word has length 262 [2020-10-13 15:05:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:28,141 INFO L479 AbstractCegarLoop]: Abstraction has 5457 states and 8475 transitions. [2020-10-13 15:05:28,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:05:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 8475 transitions. [2020-10-13 15:05:28,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 15:05:28,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:28,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:28,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:05:28,158 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash 192468310, now seen corresponding path program 1 times [2020-10-13 15:05:28,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:28,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831891940] [2020-10-13 15:05:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:28,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:28,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:28,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:30,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:33,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:33,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 15:05:33,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:05:33,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:33,693 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:05:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:33,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:33,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:33,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:33,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:05:33,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:33,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:33,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:33,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831891940] [2020-10-13 15:05:33,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:33,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:05:33,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615393639] [2020-10-13 15:05:33,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:05:33,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:05:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:05:33,770 INFO L87 Difference]: Start difference. First operand 5457 states and 8475 transitions. Second operand 5 states. [2020-10-13 15:05:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:40,774 INFO L93 Difference]: Finished difference Result 14366 states and 22110 transitions. [2020-10-13 15:05:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:40,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 262 [2020-10-13 15:05:40,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:40,798 INFO L225 Difference]: With dead ends: 14366 [2020-10-13 15:05:40,798 INFO L226 Difference]: Without dead ends: 10050 [2020-10-13 15:05:40,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2020-10-13 15:05:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 6353. [2020-10-13 15:05:41,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6353 states. [2020-10-13 15:05:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6353 states to 6353 states and 9996 transitions. [2020-10-13 15:05:41,345 INFO L78 Accepts]: Start accepts. Automaton has 6353 states and 9996 transitions. Word has length 262 [2020-10-13 15:05:41,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:41,345 INFO L479 AbstractCegarLoop]: Abstraction has 6353 states and 9996 transitions. [2020-10-13 15:05:41,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6353 states and 9996 transitions. [2020-10-13 15:05:41,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-13 15:05:41,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:41,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:41,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:05:41,365 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:41,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:41,366 INFO L82 PathProgramCache]: Analyzing trace with hash -502486232, now seen corresponding path program 1 times [2020-10-13 15:05:41,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:41,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634732343] [2020-10-13 15:05:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:46,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 15:05:46,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:05:46,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:46,860 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:05:46,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:46,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:46,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:05:46,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:46,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634732343] [2020-10-13 15:05:46,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:46,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:05:46,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757482968] [2020-10-13 15:05:46,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:05:46,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:46,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:05:46,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:46,972 INFO L87 Difference]: Start difference. First operand 6353 states and 9996 transitions. Second operand 4 states. [2020-10-13 15:05:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:51,796 INFO L93 Difference]: Finished difference Result 10829 states and 16977 transitions. [2020-10-13 15:05:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:05:51,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 262 [2020-10-13 15:05:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:51,817 INFO L225 Difference]: With dead ends: 10829 [2020-10-13 15:05:51,817 INFO L226 Difference]: Without dead ends: 7906 [2020-10-13 15:05:51,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:51,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2020-10-13 15:05:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 7246. [2020-10-13 15:05:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7246 states. [2020-10-13 15:05:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 11465 transitions. [2020-10-13 15:05:52,321 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 11465 transitions. Word has length 262 [2020-10-13 15:05:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:52,322 INFO L479 AbstractCegarLoop]: Abstraction has 7246 states and 11465 transitions. [2020-10-13 15:05:52,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:05:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 11465 transitions. [2020-10-13 15:05:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 15:05:52,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:52,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:52,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:05:52,333 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:52,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1979380894, now seen corresponding path program 1 times [2020-10-13 15:05:52,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:52,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878223301] [2020-10-13 15:05:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:55,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 15:05:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:05:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 15:05:57,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:05:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 15:05:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:05:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:57,862 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:05:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:57,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:57,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878223301] [2020-10-13 15:05:57,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:57,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:05:57,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531848912] [2020-10-13 15:05:57,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:05:57,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:57,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:05:57,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:57,922 INFO L87 Difference]: Start difference. First operand 7246 states and 11465 transitions. Second operand 4 states. [2020-10-13 15:06:02,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:02,201 INFO L93 Difference]: Finished difference Result 17836 states and 27684 transitions. [2020-10-13 15:06:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:02,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 264 [2020-10-13 15:06:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:02,223 INFO L225 Difference]: With dead ends: 17836 [2020-10-13 15:06:02,224 INFO L226 Difference]: Without dead ends: 12593 [2020-10-13 15:06:02,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12593 states. [2020-10-13 15:06:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12593 to 7477. [2020-10-13 15:06:02,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7477 states. [2020-10-13 15:06:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 11756 transitions. [2020-10-13 15:06:02,844 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 11756 transitions. Word has length 264 [2020-10-13 15:06:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:02,844 INFO L479 AbstractCegarLoop]: Abstraction has 7477 states and 11756 transitions. [2020-10-13 15:06:02,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:02,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 11756 transitions. [2020-10-13 15:06:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-13 15:06:02,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:02,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:02,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:06:02,852 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:02,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 931309213, now seen corresponding path program 1 times [2020-10-13 15:06:02,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:02,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423730096] [2020-10-13 15:06:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:04,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:07,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:07,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-13 15:06:07,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:06:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:08,471 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:06:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:08,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:08,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:08,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:06:08,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:08,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:08,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:08,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423730096] [2020-10-13 15:06:08,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:08,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:06:08,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116135899] [2020-10-13 15:06:08,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:06:08,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:08,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:06:08,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:06:08,543 INFO L87 Difference]: Start difference. First operand 7477 states and 11756 transitions. Second operand 5 states. [2020-10-13 15:06:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:16,316 INFO L93 Difference]: Finished difference Result 19443 states and 30390 transitions. [2020-10-13 15:06:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:06:16,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-13 15:06:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:16,336 INFO L225 Difference]: With dead ends: 19443 [2020-10-13 15:06:16,336 INFO L226 Difference]: Without dead ends: 14046 [2020-10-13 15:06:16,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states. [2020-10-13 15:06:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14046 to 9428. [2020-10-13 15:06:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2020-10-13 15:06:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 14998 transitions. [2020-10-13 15:06:17,038 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 14998 transitions. Word has length 264 [2020-10-13 15:06:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:17,039 INFO L479 AbstractCegarLoop]: Abstraction has 9428 states and 14998 transitions. [2020-10-13 15:06:17,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 14998 transitions. [2020-10-13 15:06:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-13 15:06:17,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:17,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:17,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:06:17,049 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:17,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2127190208, now seen corresponding path program 1 times [2020-10-13 15:06:17,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:17,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698672353] [2020-10-13 15:06:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:17,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:18,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:22,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:22,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-13 15:06:22,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 15:06:22,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:22,561 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:06:22,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:22,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:22,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698672353] [2020-10-13 15:06:22,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:22,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:22,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737796335] [2020-10-13 15:06:22,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:22,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:22,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:22,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:22,711 INFO L87 Difference]: Start difference. First operand 9428 states and 14998 transitions. Second operand 4 states. [2020-10-13 15:06:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:30,226 INFO L93 Difference]: Finished difference Result 22322 states and 34938 transitions. [2020-10-13 15:06:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:30,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 265 [2020-10-13 15:06:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:30,245 INFO L225 Difference]: With dead ends: 22322 [2020-10-13 15:06:30,245 INFO L226 Difference]: Without dead ends: 16587 [2020-10-13 15:06:30,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16587 states. [2020-10-13 15:06:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16587 to 16458. [2020-10-13 15:06:31,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16458 states. [2020-10-13 15:06:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16458 states to 16458 states and 25811 transitions. [2020-10-13 15:06:31,289 INFO L78 Accepts]: Start accepts. Automaton has 16458 states and 25811 transitions. Word has length 265 [2020-10-13 15:06:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:31,289 INFO L479 AbstractCegarLoop]: Abstraction has 16458 states and 25811 transitions. [2020-10-13 15:06:31,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16458 states and 25811 transitions. [2020-10-13 15:06:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 15:06:31,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:31,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:31,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:06:31,307 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:31,308 INFO L82 PathProgramCache]: Analyzing trace with hash -764327562, now seen corresponding path program 1 times [2020-10-13 15:06:31,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:31,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765713003] [2020-10-13 15:06:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:33,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:33,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:33,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:33,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:36,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 15:06:36,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:06:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:36,875 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:06:36,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:36,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:36,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:36,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765713003] [2020-10-13 15:06:36,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:36,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:06:36,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152781290] [2020-10-13 15:06:36,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:06:36,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:36,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:06:36,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:06:36,948 INFO L87 Difference]: Start difference. First operand 16458 states and 25811 transitions. Second operand 5 states. [2020-10-13 15:06:41,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:41,763 INFO L93 Difference]: Finished difference Result 25468 states and 39547 transitions. [2020-10-13 15:06:41,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:06:41,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 266 [2020-10-13 15:06:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:41,784 INFO L225 Difference]: With dead ends: 25468 [2020-10-13 15:06:41,784 INFO L226 Difference]: Without dead ends: 14706 [2020-10-13 15:06:41,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14706 states. [2020-10-13 15:06:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14706 to 14168. [2020-10-13 15:06:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14168 states. [2020-10-13 15:06:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14168 states to 14168 states and 22302 transitions. [2020-10-13 15:06:42,805 INFO L78 Accepts]: Start accepts. Automaton has 14168 states and 22302 transitions. Word has length 266 [2020-10-13 15:06:42,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:42,805 INFO L479 AbstractCegarLoop]: Abstraction has 14168 states and 22302 transitions. [2020-10-13 15:06:42,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 14168 states and 22302 transitions. [2020-10-13 15:06:42,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-13 15:06:42,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:42,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:42,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:06:42,820 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash 579289899, now seen corresponding path program 1 times [2020-10-13 15:06:42,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:42,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962636544] [2020-10-13 15:06:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:42,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:43,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:44,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:44,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:47,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:47,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-13 15:06:47,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 15:06:47,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:48,313 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:06:48,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:48,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962636544] [2020-10-13 15:06:48,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:48,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:48,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762079856] [2020-10-13 15:06:48,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:48,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:48,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:48,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:48,506 INFO L87 Difference]: Start difference. First operand 14168 states and 22302 transitions. Second operand 4 states. [2020-10-13 15:06:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:56,679 INFO L93 Difference]: Finished difference Result 34438 states and 53657 transitions. [2020-10-13 15:06:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:56,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2020-10-13 15:06:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:56,702 INFO L225 Difference]: With dead ends: 34438 [2020-10-13 15:06:56,702 INFO L226 Difference]: Without dead ends: 24720 [2020-10-13 15:06:56,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:56,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24720 states. [2020-10-13 15:06:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24720 to 24102. [2020-10-13 15:06:58,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24102 states. [2020-10-13 15:06:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24102 states to 24102 states and 37659 transitions. [2020-10-13 15:06:58,170 INFO L78 Accepts]: Start accepts. Automaton has 24102 states and 37659 transitions. Word has length 266 [2020-10-13 15:06:58,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:58,171 INFO L479 AbstractCegarLoop]: Abstraction has 24102 states and 37659 transitions. [2020-10-13 15:06:58,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:58,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24102 states and 37659 transitions. [2020-10-13 15:06:58,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 15:06:58,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:58,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:58,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:06:58,188 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:58,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:58,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1075480392, now seen corresponding path program 1 times [2020-10-13 15:06:58,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:58,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94834785] [2020-10-13 15:06:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:58,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:03,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 15:07:03,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:03,690 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:07:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:03,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:03,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:03,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:03,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 133 [2020-10-13 15:07:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:03,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94834785] [2020-10-13 15:07:03,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:03,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:03,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573901691] [2020-10-13 15:07:03,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:03,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:03,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:03,927 INFO L87 Difference]: Start difference. First operand 24102 states and 37659 transitions. Second operand 5 states. [2020-10-13 15:07:12,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:12,679 INFO L93 Difference]: Finished difference Result 69871 states and 108854 transitions. [2020-10-13 15:07:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:12,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2020-10-13 15:07:12,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:12,726 INFO L225 Difference]: With dead ends: 69871 [2020-10-13 15:07:12,726 INFO L226 Difference]: Without dead ends: 46600 [2020-10-13 15:07:12,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46600 states. [2020-10-13 15:07:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46600 to 46598. [2020-10-13 15:07:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46598 states. [2020-10-13 15:07:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46598 states to 46598 states and 72024 transitions. [2020-10-13 15:07:17,206 INFO L78 Accepts]: Start accepts. Automaton has 46598 states and 72024 transitions. Word has length 267 [2020-10-13 15:07:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:17,206 INFO L479 AbstractCegarLoop]: Abstraction has 46598 states and 72024 transitions. [2020-10-13 15:07:17,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 46598 states and 72024 transitions. [2020-10-13 15:07:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 15:07:17,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:17,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:17,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:07:17,244 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:17,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1841646157, now seen corresponding path program 1 times [2020-10-13 15:07:17,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561409126] [2020-10-13 15:07:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:18,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:22,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 15:07:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:22,748 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 15:07:22,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:22,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:22,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:22,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:22,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:22,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561409126] [2020-10-13 15:07:22,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:22,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:07:22,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125775125] [2020-10-13 15:07:22,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:07:22,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:07:22,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:22,837 INFO L87 Difference]: Start difference. First operand 46598 states and 72024 transitions. Second operand 4 states. [2020-10-13 15:07:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:36,241 INFO L93 Difference]: Finished difference Result 130853 states and 200939 transitions. [2020-10-13 15:07:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:07:36,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2020-10-13 15:07:36,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:36,348 INFO L225 Difference]: With dead ends: 130853 [2020-10-13 15:07:36,348 INFO L226 Difference]: Without dead ends: 91276 [2020-10-13 15:07:36,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91276 states. [2020-10-13 15:07:45,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91276 to 91274. [2020-10-13 15:07:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91274 states. [2020-10-13 15:07:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91274 states to 91274 states and 140166 transitions. [2020-10-13 15:07:45,169 INFO L78 Accepts]: Start accepts. Automaton has 91274 states and 140166 transitions. Word has length 269 [2020-10-13 15:07:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:45,170 INFO L479 AbstractCegarLoop]: Abstraction has 91274 states and 140166 transitions. [2020-10-13 15:07:45,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:07:45,170 INFO L276 IsEmpty]: Start isEmpty. Operand 91274 states and 140166 transitions. [2020-10-13 15:07:45,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-13 15:07:45,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:45,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:45,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:07:45,232 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:45,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:45,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1629297906, now seen corresponding path program 1 times [2020-10-13 15:07:45,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:45,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106545501] [2020-10-13 15:07:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:45,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...