/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=BIGGEST --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_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:46:07,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:46:07,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:46:07,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:46:07,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:46:07,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:46:07,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:46:07,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:46:07,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:46:07,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:46:07,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:46:07,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:46:07,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:46:07,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:46:07,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:46:07,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:46:07,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:46:07,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:46:07,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:46:07,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:46:07,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:46:07,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:46:07,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:46:07,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:46:07,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:46:07,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:46:07,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:46:07,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:46:07,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:46:07,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:46:07,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:46:07,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:46:07,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:46:07,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:46:07,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:46:07,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:46:07,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:46:07,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:46:07,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:46:07,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:46:07,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:46:07,814 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 [2020-10-12 19:46:07,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:46:07,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:46:07,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:46:07,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:46:07,856 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:46:07,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:46:07,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:46:07,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:46:07,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:46:07,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:46:07,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:46:07,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:46:07,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:46:07,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:46:07,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:46:07,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:46:07,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:46:07,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:46:07,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:46:07,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:46:07,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:46:07,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:46:07,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:46:07,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:46:07,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:46:07,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:46:07,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:46:07,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:46:07,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:46:07,862 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:46:08,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:46:08,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:46:08,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:46:08,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:46:08,168 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:46:08,169 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-12 19:46:08,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918a7190b/3d182ca137e147888e3f76fe5e751036/FLAG06a96b3f0 [2020-10-12 19:46:09,074 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:46:09,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-12 19:46:09,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918a7190b/3d182ca137e147888e3f76fe5e751036/FLAG06a96b3f0 [2020-10-12 19:46:09,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/918a7190b/3d182ca137e147888e3f76fe5e751036 [2020-10-12 19:46:09,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:46:09,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:46:09,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:46:09,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:46:09,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:46:09,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:09" (1/1) ... [2020-10-12 19:46:09,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ee4d01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:09, skipping insertion in model container [2020-10-12 19:46:09,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:09" (1/1) ... [2020-10-12 19:46:09,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:46:09,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:46:12,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:46:12,318 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:46:13,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:46:13,954 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:46:13,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13 WrapperNode [2020-10-12 19:46:13,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:46:13,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:46:13,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:46:13,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:46:13,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:13,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (1/1) ... [2020-10-12 19:46:14,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:46:14,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:46:14,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:46:14,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:46:14,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (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 [2020-10-12 19:46:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:46:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:46:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:46:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:46:14,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:46:14,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:46:14,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:46:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:46:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:46:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:46:14,358 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:46:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:46:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:46:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:46:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:46:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:46:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:46:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:46:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:46:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:46:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:46:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:46:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:46:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:46:20,065 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:46:20,065 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:46:20,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:46:20 BoogieIcfgContainer [2020-10-12 19:46:20,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:46:20,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:46:20,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:46:20,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:46:20,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:46:09" (1/3) ... [2020-10-12 19:46:20,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec9ff75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:46:20, skipping insertion in model container [2020-10-12 19:46:20,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:13" (2/3) ... [2020-10-12 19:46:20,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec9ff75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:46:20, skipping insertion in model container [2020-10-12 19:46:20,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:46:20" (3/3) ... [2020-10-12 19:46:20,088 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+lhb-reducer.c [2020-10-12 19:46:20,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:46:20,108 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-12 19:46:20,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-12 19:46:20,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:46:20,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:46:20,154 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:46:20,154 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:46:20,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:46:20,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:46:20,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:46:20,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:46:20,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states. [2020-10-12 19:46:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-12 19:46:20,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:20,234 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] [2020-10-12 19:46:20,235 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:20,241 INFO L82 PathProgramCache]: Analyzing trace with hash -687871141, now seen corresponding path program 1 times [2020-10-12 19:46:20,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:20,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25213888] [2020-10-12 19:46:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:20,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:25,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:25,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-12 19:46:25,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:46:25,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 19:46:25,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:46:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:46:25,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:46:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:46:28,621 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:46:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 19:46:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:28,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25213888] [2020-10-12 19:46:28,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:28,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:46:28,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549602158] [2020-10-12 19:46:28,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:46:28,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:28,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:46:28,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:46:28,825 INFO L87 Difference]: Start difference. First operand 2087 states. Second operand 7 states. [2020-10-12 19:46:31,525 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:47:05,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:05,977 INFO L93 Difference]: Finished difference Result 6076 states and 10347 transitions. [2020-10-12 19:47:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:05,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-12 19:47:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:06,031 INFO L225 Difference]: With dead ends: 6076 [2020-10-12 19:47:06,032 INFO L226 Difference]: Without dead ends: 4800 [2020-10-12 19:47:06,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:47:06,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2020-10-12 19:47:06,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 3384. [2020-10-12 19:47:06,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3384 states. [2020-10-12 19:47:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3384 states to 3384 states and 4644 transitions. [2020-10-12 19:47:06,271 INFO L78 Accepts]: Start accepts. Automaton has 3384 states and 4644 transitions. Word has length 105 [2020-10-12 19:47:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:06,272 INFO L479 AbstractCegarLoop]: Abstraction has 3384 states and 4644 transitions. [2020-10-12 19:47:06,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:47:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3384 states and 4644 transitions. [2020-10-12 19:47:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:47:06,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:06,283 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] [2020-10-12 19:47:06,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:47:06,284 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:06,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:06,284 INFO L82 PathProgramCache]: Analyzing trace with hash 351810983, now seen corresponding path program 1 times [2020-10-12 19:47:06,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:06,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905482200] [2020-10-12 19:47:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:06,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:11,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:11,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:47:11,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:47:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 19:47:11,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:11,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:47:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:47:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:14,016 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:47:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:14,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:14,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:14,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 19:47:14,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:14,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905482200] [2020-10-12 19:47:14,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:14,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:47:14,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222061034] [2020-10-12 19:47:14,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:47:14,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:14,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:47:14,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:47:14,189 INFO L87 Difference]: Start difference. First operand 3384 states and 4644 transitions. Second operand 7 states. [2020-10-12 19:47:16,717 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:47:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:33,417 INFO L93 Difference]: Finished difference Result 8070 states and 11332 transitions. [2020-10-12 19:47:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:47:33,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-12 19:47:33,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:33,451 INFO L225 Difference]: With dead ends: 8070 [2020-10-12 19:47:33,452 INFO L226 Difference]: Without dead ends: 6211 [2020-10-12 19:47:33,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:47:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6211 states. [2020-10-12 19:47:33,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6211 to 4140. [2020-10-12 19:47:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4140 states. [2020-10-12 19:47:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4140 states to 4140 states and 5817 transitions. [2020-10-12 19:47:33,623 INFO L78 Accepts]: Start accepts. Automaton has 4140 states and 5817 transitions. Word has length 106 [2020-10-12 19:47:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:47:33,623 INFO L479 AbstractCegarLoop]: Abstraction has 4140 states and 5817 transitions. [2020-10-12 19:47:33,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:47:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4140 states and 5817 transitions. [2020-10-12 19:47:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:47:33,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:33,633 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] [2020-10-12 19:47:33,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:47:33,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1213547847, now seen corresponding path program 1 times [2020-10-12 19:47:33,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:33,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848925047] [2020-10-12 19:47:33,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:33,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:34,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:34,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:35,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:47:38,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:47:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:47:38,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:47:38,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:47:38,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:41,665 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:47:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:41,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:41,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:41,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:41,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:47:41,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:41,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:41,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848925047] [2020-10-12 19:47:41,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:41,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:47:41,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549967622] [2020-10-12 19:47:41,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:47:41,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:41,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:47:41,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:47:41,780 INFO L87 Difference]: Start difference. First operand 4140 states and 5817 transitions. Second operand 7 states. [2020-10-12 19:47:44,225 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:48:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:06,221 INFO L93 Difference]: Finished difference Result 13203 states and 19028 transitions. [2020-10-12 19:48:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:48:06,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-12 19:48:06,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:06,269 INFO L225 Difference]: With dead ends: 13203 [2020-10-12 19:48:06,269 INFO L226 Difference]: Without dead ends: 11399 [2020-10-12 19:48:06,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:48:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11399 states. [2020-10-12 19:48:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11399 to 9022. [2020-10-12 19:48:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9022 states. [2020-10-12 19:48:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 13140 transitions. [2020-10-12 19:48:06,594 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 13140 transitions. Word has length 106 [2020-10-12 19:48:06,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:06,595 INFO L479 AbstractCegarLoop]: Abstraction has 9022 states and 13140 transitions. [2020-10-12 19:48:06,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:48:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 13140 transitions. [2020-10-12 19:48:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 19:48:06,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:06,616 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] [2020-10-12 19:48:06,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:48:06,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:06,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1735404477, now seen corresponding path program 1 times [2020-10-12 19:48:06,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:06,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235102560] [2020-10-12 19:48:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:06,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:06,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:11,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:11,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 19:48:11,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:48:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:48:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:48:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 19:48:11,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:48:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:14,239 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:48:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:14,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:14,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:14,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235102560] [2020-10-12 19:48:14,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:14,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:48:14,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129680129] [2020-10-12 19:48:14,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:48:14,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:14,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:48:14,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:48:14,343 INFO L87 Difference]: Start difference. First operand 9022 states and 13140 transitions. Second operand 7 states. [2020-10-12 19:48:16,841 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:48:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:48:38,640 INFO L93 Difference]: Finished difference Result 26092 states and 38216 transitions. [2020-10-12 19:48:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:48:38,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-12 19:48:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:48:38,696 INFO L225 Difference]: With dead ends: 26092 [2020-10-12 19:48:38,697 INFO L226 Difference]: Without dead ends: 19798 [2020-10-12 19:48:38,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:48:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19798 states. [2020-10-12 19:48:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19798 to 14636. [2020-10-12 19:48:39,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14636 states. [2020-10-12 19:48:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14636 states to 14636 states and 21370 transitions. [2020-10-12 19:48:39,243 INFO L78 Accepts]: Start accepts. Automaton has 14636 states and 21370 transitions. Word has length 107 [2020-10-12 19:48:39,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:48:39,244 INFO L479 AbstractCegarLoop]: Abstraction has 14636 states and 21370 transitions. [2020-10-12 19:48:39,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:48:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14636 states and 21370 transitions. [2020-10-12 19:48:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-12 19:48:39,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:48:39,270 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] [2020-10-12 19:48:39,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:48:39,271 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:48:39,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:48:39,271 INFO L82 PathProgramCache]: Analyzing trace with hash -50946715, now seen corresponding path program 1 times [2020-10-12 19:48:39,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:48:39,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910483959] [2020-10-12 19:48:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:48:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:40,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:40,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:40,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:44,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:44,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 19:48:44,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:48:44,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:48:44,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:44,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:48:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:48:44,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:48:44,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:46,763 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:48:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:48:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:48:46,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:48:46,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:48:46,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:48:46,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:48:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 19:48:46,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:48:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:48:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:48:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:48:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:48:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:48:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910483959] [2020-10-12 19:48:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:48:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:48:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098691978] [2020-10-12 19:48:46,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:48:46,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:48:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:48:46,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:48:46,865 INFO L87 Difference]: Start difference. First operand 14636 states and 21370 transitions. Second operand 7 states. [2020-10-12 19:48:49,369 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:49:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:04,841 INFO L93 Difference]: Finished difference Result 33838 states and 49784 transitions. [2020-10-12 19:49:04,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:49:04,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-12 19:49:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:04,908 INFO L225 Difference]: With dead ends: 33838 [2020-10-12 19:49:04,908 INFO L226 Difference]: Without dead ends: 29530 [2020-10-12 19:49:04,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:49:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29530 states. [2020-10-12 19:49:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29530 to 17166. [2020-10-12 19:49:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17166 states. [2020-10-12 19:49:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17166 states to 17166 states and 25097 transitions. [2020-10-12 19:49:05,637 INFO L78 Accepts]: Start accepts. Automaton has 17166 states and 25097 transitions. Word has length 107 [2020-10-12 19:49:05,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:05,638 INFO L479 AbstractCegarLoop]: Abstraction has 17166 states and 25097 transitions. [2020-10-12 19:49:05,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 17166 states and 25097 transitions. [2020-10-12 19:49:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:49:05,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:05,666 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] [2020-10-12 19:49:05,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:49:05,666 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:05,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:05,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1814136533, now seen corresponding path program 1 times [2020-10-12 19:49:05,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:05,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462940508] [2020-10-12 19:49:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:05,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:06,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:10,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:49:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:49:10,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:49:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:49:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:49:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:49:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:13,126 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:49:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:13,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:13,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462940508] [2020-10-12 19:49:13,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:13,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:49:13,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072070898] [2020-10-12 19:49:13,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:49:13,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:13,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:49:13,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:49:13,220 INFO L87 Difference]: Start difference. First operand 17166 states and 25097 transitions. Second operand 7 states. [2020-10-12 19:49:15,830 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification that was a NOOP. DAG size: 773 [2020-10-12 19:49:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:40,982 INFO L93 Difference]: Finished difference Result 73503 states and 107659 transitions. [2020-10-12 19:49:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:49:40,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-12 19:49:40,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:41,101 INFO L225 Difference]: With dead ends: 73503 [2020-10-12 19:49:41,102 INFO L226 Difference]: Without dead ends: 60868 [2020-10-12 19:49:41,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:49:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60868 states. [2020-10-12 19:49:42,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60868 to 42799. [2020-10-12 19:49:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42799 states. [2020-10-12 19:49:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42799 states to 42799 states and 62334 transitions. [2020-10-12 19:49:42,603 INFO L78 Accepts]: Start accepts. Automaton has 42799 states and 62334 transitions. Word has length 108 [2020-10-12 19:49:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:42,603 INFO L479 AbstractCegarLoop]: Abstraction has 42799 states and 62334 transitions. [2020-10-12 19:49:42,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:49:42,603 INFO L276 IsEmpty]: Start isEmpty. Operand 42799 states and 62334 transitions. [2020-10-12 19:49:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 19:49:42,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:42,658 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] [2020-10-12 19:49:42,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:49:42,658 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:42,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:42,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1076872727, now seen corresponding path program 1 times [2020-10-12 19:49:42,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:42,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590757634] [2020-10-12 19:49:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:43,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:47,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-12 19:49:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:49:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:50,600 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 769 [2020-10-12 19:49:50,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:50,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:50,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:50,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:50,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 19:49:50,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:50,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:50,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:50,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590757634] [2020-10-12 19:49:50,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:50,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:49:50,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016630764] [2020-10-12 19:49:50,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:49:50,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:50,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:49:50,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:49:50,728 INFO L87 Difference]: Start difference. First operand 42799 states and 62334 transitions. Second operand 9 states.