/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_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:24:39,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:24:39,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:24:39,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:24:39,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:24:39,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:24:39,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:24:39,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:24:39,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:24:39,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:24:39,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:24:39,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:24:39,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:24:39,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:24:39,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:24:39,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:24:39,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:24:39,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:24:39,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:24:39,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:24:39,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:24:39,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:24:39,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:24:39,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:24:39,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:24:39,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:24:39,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:24:39,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:24:39,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:24:39,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:24:39,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:24:39,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:24:39,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:24:39,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:24:39,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:24:39,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:24:39,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:24:39,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:24:39,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:24:39,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:24:39,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:24:39,136 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 19:24:39,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:24:39,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:24:39,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:24:39,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:24:39,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:24:39,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:24:39,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:24:39,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:24:39,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:24:39,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:24:39,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:24:39,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:24:39,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:24:39,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:24:39,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:24:39,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:24:39,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:24:39,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:24:39,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:24:39,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:24:39,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:24:39,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:24:39,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:24:39,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:24:39,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:24:39,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:24:39,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:24:39,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:24:39,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:24:39,165 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 19:24:39,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:24:39,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:24:39,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:24:39,459 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:24:39,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:24:39,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:24:39,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0c804efe/2a555aa8447a492ab2368e29feb1e464/FLAG9de9256dc [2020-10-12 19:24:40,234 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:24:40,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:24:40,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0c804efe/2a555aa8447a492ab2368e29feb1e464/FLAG9de9256dc [2020-10-12 19:24:40,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0c804efe/2a555aa8447a492ab2368e29feb1e464 [2020-10-12 19:24:40,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:24:40,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:24:40,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:40,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:24:40,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:24:40,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16febf07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:40, skipping insertion in model container [2020-10-12 19:24:40,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:24:40" (1/1) ... [2020-10-12 19:24:40,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:24:40,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:24:42,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:42,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:24:43,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:24:43,489 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:24:43,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43 WrapperNode [2020-10-12 19:24:43,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:24:43,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:24:43,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:24:43,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:24:43,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (1/1) ... [2020-10-12 19:24:43,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:24:43,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:24:43,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:24:43,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:24:43,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (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 19:24:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:24:43,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:24:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:24:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:24:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:24:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:24:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:24:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:24:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:24:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:24:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:24:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:24:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:24:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:24:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:24:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:24:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:24:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:24:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:24:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:24:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:24:48,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:24:48,054 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:24:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:48 BoogieIcfgContainer [2020-10-12 19:24:48,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:24:48,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:24:48,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:24:48,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:24:48,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:24:40" (1/3) ... [2020-10-12 19:24:48,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782e7eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:48, skipping insertion in model container [2020-10-12 19:24:48,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:24:43" (2/3) ... [2020-10-12 19:24:48,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782e7eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:24:48, skipping insertion in model container [2020-10-12 19:24:48,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:24:48" (3/3) ... [2020-10-12 19:24:48,076 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:24:48,089 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:24:48,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-12 19:24:48,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-12 19:24:48,145 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:24:48,145 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:24:48,145 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:24:48,145 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:24:48,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:24:48,146 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:24:48,146 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:24:48,146 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:24:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states. [2020-10-12 19:24:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-12 19:24:48,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:48,287 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:24:48,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:48,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:48,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1447603851, now seen corresponding path program 1 times [2020-10-12 19:24:48,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:48,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082758450] [2020-10-12 19:24:48,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:50,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:55,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:55,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-12 19:24:55,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:24:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-12 19:24:55,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:24:55,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:24:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-12 19:24:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:24:56,535 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:24:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:56,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:56,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:56,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:56,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 19:24:56,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:56,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:56,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:57,151 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 19:24:57,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082758450] [2020-10-12 19:24:57,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:57,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:24:57,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514707399] [2020-10-12 19:24:57,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:24:57,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:24:57,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:24:57,174 INFO L87 Difference]: Start difference. First operand 1393 states. Second operand 5 states. [2020-10-12 19:25:13,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:13,244 INFO L93 Difference]: Finished difference Result 4125 states and 7467 transitions. [2020-10-12 19:25:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:25:13,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2020-10-12 19:25:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:13,288 INFO L225 Difference]: With dead ends: 4125 [2020-10-12 19:25:13,289 INFO L226 Difference]: Without dead ends: 2741 [2020-10-12 19:25:13,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:13,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2020-10-12 19:25:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2688. [2020-10-12 19:25:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2688 states. [2020-10-12 19:25:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 4398 transitions. [2020-10-12 19:25:13,653 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 4398 transitions. Word has length 473 [2020-10-12 19:25:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:13,657 INFO L479 AbstractCegarLoop]: Abstraction has 2688 states and 4398 transitions. [2020-10-12 19:25:13,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 4398 transitions. [2020-10-12 19:25:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-12 19:25:13,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:13,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:13,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:25:13,689 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:13,691 INFO L82 PathProgramCache]: Analyzing trace with hash -369254340, now seen corresponding path program 1 times [2020-10-12 19:25:13,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:13,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281431881] [2020-10-12 19:25:13,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:14,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:19,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:19,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-12 19:25:19,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:25:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-12 19:25:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-12 19:25:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:20,454 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:25:20,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:20,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:20,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:20,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 19:25:20,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:20,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:20,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:20,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:25:21,291 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 19:25:21,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281431881] [2020-10-12 19:25:21,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:21,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:21,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806285078] [2020-10-12 19:25:21,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:21,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:21,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:21,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:21,300 INFO L87 Difference]: Start difference. First operand 2688 states and 4398 transitions. Second operand 5 states. [2020-10-12 19:25:38,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:38,143 INFO L93 Difference]: Finished difference Result 7925 states and 12959 transitions. [2020-10-12 19:25:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:38,145 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 475 [2020-10-12 19:25:38,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:38,173 INFO L225 Difference]: With dead ends: 7925 [2020-10-12 19:25:38,173 INFO L226 Difference]: Without dead ends: 5319 [2020-10-12 19:25:38,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2020-10-12 19:25:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 5277. [2020-10-12 19:25:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5277 states. [2020-10-12 19:25:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 8609 transitions. [2020-10-12 19:25:38,458 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 8609 transitions. Word has length 475 [2020-10-12 19:25:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:38,459 INFO L479 AbstractCegarLoop]: Abstraction has 5277 states and 8609 transitions. [2020-10-12 19:25:38,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:38,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 8609 transitions. [2020-10-12 19:25:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-12 19:25:38,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:25:38,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:38,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:25:38,478 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:25:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:25:38,478 INFO L82 PathProgramCache]: Analyzing trace with hash 481621780, now seen corresponding path program 1 times [2020-10-12 19:25:38,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:25:38,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481971297] [2020-10-12 19:25:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:25:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:39,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:39,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:40,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:41,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:43,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-12 19:25:43,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:25:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-12 19:25:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:25:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:25:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-12 19:25:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:44,799 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:25:44,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:25:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:25:44,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:25:44,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:25:44,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:25:44,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:25:44,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:25:44,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:25:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:25:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:25:44,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:25:44,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:25:45,237 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 19:25:45,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481971297] [2020-10-12 19:25:45,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:25:45,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:25:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920957416] [2020-10-12 19:25:45,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:25:45,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:25:45,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:25:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:25:45,241 INFO L87 Difference]: Start difference. First operand 5277 states and 8609 transitions. Second operand 5 states. [2020-10-12 19:25:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:25:59,312 INFO L93 Difference]: Finished difference Result 15658 states and 25533 transitions. [2020-10-12 19:25:59,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:25:59,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2020-10-12 19:25:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:25:59,369 INFO L225 Difference]: With dead ends: 15658 [2020-10-12 19:25:59,369 INFO L226 Difference]: Without dead ends: 10425 [2020-10-12 19:25:59,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:25:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10425 states. [2020-10-12 19:25:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10425 to 10405. [2020-10-12 19:25:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10405 states. [2020-10-12 19:25:59,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10405 states to 10405 states and 16897 transitions. [2020-10-12 19:25:59,992 INFO L78 Accepts]: Start accepts. Automaton has 10405 states and 16897 transitions. Word has length 479 [2020-10-12 19:25:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:25:59,993 INFO L479 AbstractCegarLoop]: Abstraction has 10405 states and 16897 transitions. [2020-10-12 19:25:59,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:25:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10405 states and 16897 transitions. [2020-10-12 19:26:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2020-10-12 19:26:00,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:00,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:00,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:26:00,034 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:00,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1923238619, now seen corresponding path program 1 times [2020-10-12 19:26:00,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:00,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454800694] [2020-10-12 19:26:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:00,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:01,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:03,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-12 19:26:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:26:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-12 19:26:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-12 19:26:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:06,086 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:26:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:06,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:06,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:06,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:26:06,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:06,355 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 19:26:06,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454800694] [2020-10-12 19:26:06,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:06,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:06,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100184443] [2020-10-12 19:26:06,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:06,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:06,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:06,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:06,358 INFO L87 Difference]: Start difference. First operand 10405 states and 16897 transitions. Second operand 5 states. [2020-10-12 19:26:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:21,999 INFO L93 Difference]: Finished difference Result 30311 states and 49103 transitions. [2020-10-12 19:26:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:22,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 482 [2020-10-12 19:26:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:22,064 INFO L225 Difference]: With dead ends: 30311 [2020-10-12 19:26:22,065 INFO L226 Difference]: Without dead ends: 20330 [2020-10-12 19:26:22,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20330 states. [2020-10-12 19:26:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20330 to 20197. [2020-10-12 19:26:23,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20197 states. [2020-10-12 19:26:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20197 states to 20197 states and 32597 transitions. [2020-10-12 19:26:23,146 INFO L78 Accepts]: Start accepts. Automaton has 20197 states and 32597 transitions. Word has length 482 [2020-10-12 19:26:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:23,146 INFO L479 AbstractCegarLoop]: Abstraction has 20197 states and 32597 transitions. [2020-10-12 19:26:23,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20197 states and 32597 transitions. [2020-10-12 19:26:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-12 19:26:23,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:23,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:23,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:26:23,190 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:23,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:23,191 INFO L82 PathProgramCache]: Analyzing trace with hash -990708820, now seen corresponding path program 1 times [2020-10-12 19:26:23,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:23,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029099177] [2020-10-12 19:26:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:24,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:24,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:25,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:26,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:26,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:27,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:28,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:28,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-12 19:26:28,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:26:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-12 19:26:28,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-12 19:26:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:29,482 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:26:29,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:29,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:29,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:26:29,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:29,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:29,839 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 19:26:29,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029099177] [2020-10-12 19:26:29,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:29,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:29,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851354092] [2020-10-12 19:26:29,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:29,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:29,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:29,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:29,841 INFO L87 Difference]: Start difference. First operand 20197 states and 32597 transitions. Second operand 5 states. [2020-10-12 19:26:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:26:48,421 INFO L93 Difference]: Finished difference Result 59111 states and 95243 transitions. [2020-10-12 19:26:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:26:48,424 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-10-12 19:26:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:26:48,512 INFO L225 Difference]: With dead ends: 59111 [2020-10-12 19:26:48,512 INFO L226 Difference]: Without dead ends: 39602 [2020-10-12 19:26:48,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:26:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39602 states. [2020-10-12 19:26:51,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39602 to 39469. [2020-10-12 19:26:51,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39469 states. [2020-10-12 19:26:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39469 states to 39469 states and 63413 transitions. [2020-10-12 19:26:51,607 INFO L78 Accepts]: Start accepts. Automaton has 39469 states and 63413 transitions. Word has length 484 [2020-10-12 19:26:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:26:51,608 INFO L479 AbstractCegarLoop]: Abstraction has 39469 states and 63413 transitions. [2020-10-12 19:26:51,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:26:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 39469 states and 63413 transitions. [2020-10-12 19:26:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-12 19:26:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:26:51,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:51,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:26:51,668 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:26:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:26:51,669 INFO L82 PathProgramCache]: Analyzing trace with hash 738143827, now seen corresponding path program 1 times [2020-10-12 19:26:51,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:26:51,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932715398] [2020-10-12 19:26:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:26:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:55,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:56,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:56,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:56,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:56,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5146 [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:26:56,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-12 19:26:56,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:58,039 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:26:58,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:26:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:26:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:26:58,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:26:58,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:26:58,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:26:58,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:26:58,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:26:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:26:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:26:58,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:26:58,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:26:58,319 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 19:26:58,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932715398] [2020-10-12 19:26:58,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:26:58,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:26:58,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636686803] [2020-10-12 19:26:58,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:26:58,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:26:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:26:58,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:26:58,322 INFO L87 Difference]: Start difference. First operand 39469 states and 63413 transitions. Second operand 5 states. [2020-10-12 19:27:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:18,756 INFO L93 Difference]: Finished difference Result 116479 states and 186947 transitions. [2020-10-12 19:27:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:18,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 486 [2020-10-12 19:27:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:19,278 INFO L225 Difference]: With dead ends: 116479 [2020-10-12 19:27:19,278 INFO L226 Difference]: Without dead ends: 77930 [2020-10-12 19:27:19,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:19,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77930 states. [2020-10-12 19:27:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77930 to 77797. [2020-10-12 19:27:23,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77797 states. [2020-10-12 19:27:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77797 states to 77797 states and 124429 transitions. [2020-10-12 19:27:23,706 INFO L78 Accepts]: Start accepts. Automaton has 77797 states and 124429 transitions. Word has length 486 [2020-10-12 19:27:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:27:23,707 INFO L479 AbstractCegarLoop]: Abstraction has 77797 states and 124429 transitions. [2020-10-12 19:27:23,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:27:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 77797 states and 124429 transitions. [2020-10-12 19:27:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2020-10-12 19:27:23,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:27:23,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:27:23,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:27:23,793 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:27:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:27:23,793 INFO L82 PathProgramCache]: Analyzing trace with hash -407234769, now seen corresponding path program 1 times [2020-10-12 19:27:23,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:27:23,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857887254] [2020-10-12 19:27:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:27:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:23,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 497 [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:27:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 19:27:28,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 19:27:28,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:29,868 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:27:29,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:27:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:27:29,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:27:29,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:27:29,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:27:29,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:27:30,053 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 19:27:30,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857887254] [2020-10-12 19:27:30,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:27:30,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:27:30,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244131342] [2020-10-12 19:27:30,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:27:30,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:27:30,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:27:30,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:27:30,056 INFO L87 Difference]: Start difference. First operand 77797 states and 124429 transitions. Second operand 5 states. [2020-10-12 19:27:58,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:27:58,332 INFO L93 Difference]: Finished difference Result 216399 states and 342707 transitions. [2020-10-12 19:27:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:27:58,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 491 [2020-10-12 19:27:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:27:58,556 INFO L225 Difference]: With dead ends: 216399 [2020-10-12 19:27:58,557 INFO L226 Difference]: Without dead ends: 152074 [2020-10-12 19:27:58,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:27:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152074 states. [2020-10-12 19:28:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152074 to 89029. [2020-10-12 19:28:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89029 states. [2020-10-12 19:28:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89029 states to 89029 states and 144637 transitions. [2020-10-12 19:28:06,508 INFO L78 Accepts]: Start accepts. Automaton has 89029 states and 144637 transitions. Word has length 491 [2020-10-12 19:28:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:28:06,509 INFO L479 AbstractCegarLoop]: Abstraction has 89029 states and 144637 transitions. [2020-10-12 19:28:06,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:28:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 89029 states and 144637 transitions. [2020-10-12 19:28:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2020-10-12 19:28:06,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:28:06,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:06,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:28:06,605 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:28:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:28:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash -969188346, now seen corresponding path program 1 times [2020-10-12 19:28:06,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:28:06,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717539120] [2020-10-12 19:28:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:28:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:10,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:10,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:13,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-12 19:28:13,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:28:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6429 [2020-10-12 19:28:13,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:28:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:28:13,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-12 19:28:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:14,056 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-12 19:28:14,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:28:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:28:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:28:14,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:28:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:28:14,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:28:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:28:14,338 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 19:28:14,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717539120] [2020-10-12 19:28:14,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:28:14,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:28:14,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655899226] [2020-10-12 19:28:14,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:28:14,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:28:14,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:28:14,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:28:14,340 INFO L87 Difference]: Start difference. First operand 89029 states and 144637 transitions. Second operand 5 states.