/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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:18:59,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:18:59,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:18:59,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:18:59,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:18:59,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:18:59,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:18:59,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:18:59,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:18:59,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:18:59,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:18:59,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:18:59,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:18:59,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:18:59,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:18:59,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:18:59,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:18:59,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:18:59,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:18:59,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:18:59,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:18:59,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:18:59,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:18:59,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:18:59,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:18:59,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:18:59,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:18:59,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:18:59,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:18:59,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:18:59,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:18:59,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:18:59,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:18:59,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:18:59,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:18:59,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:18:59,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:18:59,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:18:59,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:18:59,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:18:59,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:18:59,141 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 20:18:59,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:18:59,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:18:59,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:18:59,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:18:59,166 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:18:59,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:18:59,166 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:18:59,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:18:59,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:18:59,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:18:59,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:18:59,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:18:59,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:18:59,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:18:59,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:18:59,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:18:59,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:18:59,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:18:59,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:18:59,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:18:59,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:18:59,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:18:59,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:18:59,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:18:59,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:18:59,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:18:59,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:18:59,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:18:59,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:18:59,170 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 20:18:59,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:18:59,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:18:59,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:18:59,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:18:59,514 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:18:59,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:18:59,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1345f79a2/3c5769663a1d488e84cf0865ebe486b7/FLAG071e1cbe3 [2020-10-12 20:19:00,219 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:19:00,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:19:00,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1345f79a2/3c5769663a1d488e84cf0865ebe486b7/FLAG071e1cbe3 [2020-10-12 20:19:00,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1345f79a2/3c5769663a1d488e84cf0865ebe486b7 [2020-10-12 20:19:00,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:19:00,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:19:00,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:00,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:19:00,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:19:00,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:00" (1/1) ... [2020-10-12 20:19:00,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1be1e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:00, skipping insertion in model container [2020-10-12 20:19:00,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:19:00" (1/1) ... [2020-10-12 20:19:00,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:19:00,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:19:01,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:01,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:19:01,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:19:01,677 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:19:01,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01 WrapperNode [2020-10-12 20:19:01,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:19:01,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:19:01,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:19:01,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:19:01,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (1/1) ... [2020-10-12 20:19:01,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:19:01,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:19:01,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:19:01,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:19:01,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (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 20:19:01,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:19:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:19:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:19:01,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:19:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:19:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:19:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:19:01,877 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:19:01,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:19:03,389 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:19:03,389 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:19:03,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:03 BoogieIcfgContainer [2020-10-12 20:19:03,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:19:03,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:19:03,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:19:03,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:19:03,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:19:00" (1/3) ... [2020-10-12 20:19:03,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0acc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:03, skipping insertion in model container [2020-10-12 20:19:03,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:19:01" (2/3) ... [2020-10-12 20:19:03,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0acc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:19:03, skipping insertion in model container [2020-10-12 20:19:03,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:19:03" (3/3) ... [2020-10-12 20:19:03,406 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 20:19:03,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:19:03,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-12 20:19:03,475 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-12 20:19:03,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:19:03,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:19:03,525 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:19:03,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:19:03,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:19:03,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:19:03,526 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:19:03,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:19:03,570 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2020-10-12 20:19:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 20:19:03,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:03,605 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] [2020-10-12 20:19:03,605 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:03,612 INFO L82 PathProgramCache]: Analyzing trace with hash -348588451, now seen corresponding path program 1 times [2020-10-12 20:19:03,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:03,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87283374] [2020-10-12 20:19:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:04,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:04,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:04,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:05,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:09,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:09,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 20:19:09,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:19:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:19:09,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 20:19:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:19:09,908 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:09,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:09,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:09,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:09,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:09,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:19:09,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:09,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:10,072 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 20:19:10,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87283374] [2020-10-12 20:19:10,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:10,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:10,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677075317] [2020-10-12 20:19:10,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:10,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:10,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:10,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:10,100 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 5 states. [2020-10-12 20:19:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:13,974 INFO L93 Difference]: Finished difference Result 1192 states and 2124 transitions. [2020-10-12 20:19:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:19:13,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-12 20:19:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:13,998 INFO L225 Difference]: With dead ends: 1192 [2020-10-12 20:19:13,998 INFO L226 Difference]: Without dead ends: 793 [2020-10-12 20:19:14,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-10-12 20:19:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 766. [2020-10-12 20:19:14,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2020-10-12 20:19:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1090 transitions. [2020-10-12 20:19:14,108 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1090 transitions. Word has length 151 [2020-10-12 20:19:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:14,109 INFO L479 AbstractCegarLoop]: Abstraction has 766 states and 1090 transitions. [2020-10-12 20:19:14,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1090 transitions. [2020-10-12 20:19:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 20:19:14,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:14,112 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] [2020-10-12 20:19:14,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:19:14,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:14,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1466123316, now seen corresponding path program 1 times [2020-10-12 20:19:14,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:14,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023809167] [2020-10-12 20:19:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:14,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:16,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 20:19:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:19:19,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:19:19,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:19:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,485 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:19,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:19,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:19,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:19,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:19,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:19:19,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:19,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:19,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:19,567 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 20:19:19,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023809167] [2020-10-12 20:19:19,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:19,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:19,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096628686] [2020-10-12 20:19:19,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:19,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:19,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:19,572 INFO L87 Difference]: Start difference. First operand 766 states and 1090 transitions. Second operand 5 states. [2020-10-12 20:19:22,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:22,867 INFO L93 Difference]: Finished difference Result 2202 states and 3112 transitions. [2020-10-12 20:19:22,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:22,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-12 20:19:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:22,878 INFO L225 Difference]: With dead ends: 2202 [2020-10-12 20:19:22,878 INFO L226 Difference]: Without dead ends: 1469 [2020-10-12 20:19:22,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:22,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2020-10-12 20:19:22,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1442. [2020-10-12 20:19:22,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1442 states. [2020-10-12 20:19:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2034 transitions. [2020-10-12 20:19:22,966 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2034 transitions. Word has length 152 [2020-10-12 20:19:22,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:22,967 INFO L479 AbstractCegarLoop]: Abstraction has 1442 states and 2034 transitions. [2020-10-12 20:19:22,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2034 transitions. [2020-10-12 20:19:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-12 20:19:22,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:22,971 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] [2020-10-12 20:19:22,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:19:22,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:22,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1922067898, now seen corresponding path program 1 times [2020-10-12 20:19:22,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:22,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132319426] [2020-10-12 20:19:22,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:28,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:28,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-12 20:19:28,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:19:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:19:28,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:19:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:28,320 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:28,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:28,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:28,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:28,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:28,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:28,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:19:28,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:28,409 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 20:19:28,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132319426] [2020-10-12 20:19:28,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:28,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:28,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304396143] [2020-10-12 20:19:28,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:28,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:28,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:28,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:28,413 INFO L87 Difference]: Start difference. First operand 1442 states and 2034 transitions. Second operand 5 states. [2020-10-12 20:19:31,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:31,551 INFO L93 Difference]: Finished difference Result 4218 states and 5925 transitions. [2020-10-12 20:19:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:31,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-12 20:19:31,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:31,567 INFO L225 Difference]: With dead ends: 4218 [2020-10-12 20:19:31,568 INFO L226 Difference]: Without dead ends: 2789 [2020-10-12 20:19:31,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2020-10-12 20:19:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2766. [2020-10-12 20:19:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-12 20:19:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3855 transitions. [2020-10-12 20:19:31,687 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3855 transitions. Word has length 153 [2020-10-12 20:19:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:31,687 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 3855 transitions. [2020-10-12 20:19:31,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3855 transitions. [2020-10-12 20:19:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-12 20:19:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:31,693 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] [2020-10-12 20:19:31,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:19:31,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:31,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:31,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2044341547, now seen corresponding path program 1 times [2020-10-12 20:19:31,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:31,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54280606] [2020-10-12 20:19:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:31,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:32,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:33,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:36,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:36,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 20:19:36,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:19:36,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 20:19:36,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:36,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 20:19:36,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:37,067 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:37,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:37,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:19:37,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:37,143 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 20:19:37,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54280606] [2020-10-12 20:19:37,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:37,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:37,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964813601] [2020-10-12 20:19:37,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:37,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:37,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:37,150 INFO L87 Difference]: Start difference. First operand 2766 states and 3855 transitions. Second operand 5 states. [2020-10-12 20:19:40,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:40,583 INFO L93 Difference]: Finished difference Result 8036 states and 11148 transitions. [2020-10-12 20:19:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:40,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-12 20:19:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:40,610 INFO L225 Difference]: With dead ends: 8036 [2020-10-12 20:19:40,610 INFO L226 Difference]: Without dead ends: 5332 [2020-10-12 20:19:40,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2020-10-12 20:19:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 5302. [2020-10-12 20:19:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5302 states. [2020-10-12 20:19:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 7298 transitions. [2020-10-12 20:19:40,844 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 7298 transitions. Word has length 154 [2020-10-12 20:19:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:40,846 INFO L479 AbstractCegarLoop]: Abstraction has 5302 states and 7298 transitions. [2020-10-12 20:19:40,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 7298 transitions. [2020-10-12 20:19:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-12 20:19:40,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:40,857 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] [2020-10-12 20:19:40,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:19:40,858 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1923525637, now seen corresponding path program 1 times [2020-10-12 20:19:40,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:40,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931722858] [2020-10-12 20:19:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:40,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:40,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:44,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 20:19:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:19:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:19:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 20:19:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:19:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:46,208 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:46,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:46,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:46,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:46,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:19:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:19:46,284 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 20:19:46,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931722858] [2020-10-12 20:19:46,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:46,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:46,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613619516] [2020-10-12 20:19:46,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:46,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:46,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:46,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:46,287 INFO L87 Difference]: Start difference. First operand 5302 states and 7298 transitions. Second operand 5 states. [2020-10-12 20:19:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:48,102 INFO L93 Difference]: Finished difference Result 8397 states and 11589 transitions. [2020-10-12 20:19:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:48,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-12 20:19:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:48,120 INFO L225 Difference]: With dead ends: 8397 [2020-10-12 20:19:48,120 INFO L226 Difference]: Without dead ends: 3451 [2020-10-12 20:19:48,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2020-10-12 20:19:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3445. [2020-10-12 20:19:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3445 states. [2020-10-12 20:19:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4731 transitions. [2020-10-12 20:19:48,261 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4731 transitions. Word has length 155 [2020-10-12 20:19:48,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:48,261 INFO L479 AbstractCegarLoop]: Abstraction has 3445 states and 4731 transitions. [2020-10-12 20:19:48,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4731 transitions. [2020-10-12 20:19:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:19:48,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:48,273 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] [2020-10-12 20:19:48,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:19:48,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:48,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:48,274 INFO L82 PathProgramCache]: Analyzing trace with hash 316884284, now seen corresponding path program 1 times [2020-10-12 20:19:48,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:48,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919210571] [2020-10-12 20:19:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:48,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:48,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:51,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:51,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:51,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:53,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:19:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:19:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:19:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:19:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:19:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 20:19:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:53,591 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:19:53,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:53,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:53,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:53,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:19:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:53,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:53,660 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 20:19:53,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919210571] [2020-10-12 20:19:53,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:53,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:53,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831122046] [2020-10-12 20:19:53,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:19:53,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:53,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:19:53,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:53,665 INFO L87 Difference]: Start difference. First operand 3445 states and 4731 transitions. Second operand 5 states. [2020-10-12 20:19:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:56,541 INFO L93 Difference]: Finished difference Result 10012 states and 13676 transitions. [2020-10-12 20:19:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:56,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 20:19:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:56,568 INFO L225 Difference]: With dead ends: 10012 [2020-10-12 20:19:56,568 INFO L226 Difference]: Without dead ends: 6614 [2020-10-12 20:19:56,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6614 states. [2020-10-12 20:19:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6614 to 6593. [2020-10-12 20:19:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6593 states. [2020-10-12 20:19:56,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6593 states to 6593 states and 8909 transitions. [2020-10-12 20:19:56,836 INFO L78 Accepts]: Start accepts. Automaton has 6593 states and 8909 transitions. Word has length 159 [2020-10-12 20:19:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:56,837 INFO L479 AbstractCegarLoop]: Abstraction has 6593 states and 8909 transitions. [2020-10-12 20:19:56,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:19:56,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6593 states and 8909 transitions. [2020-10-12 20:19:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-12 20:19:56,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:56,848 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] [2020-10-12 20:19:56,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:19:56,848 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1952118345, now seen corresponding path program 1 times [2020-10-12 20:19:56,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:56,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175770214] [2020-10-12 20:19:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:56,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:59,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:59,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:01,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-12 20:20:01,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:01,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:20:01,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:20:01,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 20:20:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:02,159 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:02,211 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 20:20:02,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175770214] [2020-10-12 20:20:02,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:02,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:02,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986770265] [2020-10-12 20:20:02,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:02,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:02,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:02,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:02,214 INFO L87 Difference]: Start difference. First operand 6593 states and 8909 transitions. Second operand 5 states. [2020-10-12 20:20:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:03,926 INFO L93 Difference]: Finished difference Result 11684 states and 15822 transitions. [2020-10-12 20:20:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:03,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-12 20:20:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:03,947 INFO L225 Difference]: With dead ends: 11684 [2020-10-12 20:20:03,948 INFO L226 Difference]: Without dead ends: 5352 [2020-10-12 20:20:03,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5352 states. [2020-10-12 20:20:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5352 to 5351. [2020-10-12 20:20:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5351 states. [2020-10-12 20:20:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5351 states to 5351 states and 7217 transitions. [2020-10-12 20:20:04,156 INFO L78 Accepts]: Start accepts. Automaton has 5351 states and 7217 transitions. Word has length 160 [2020-10-12 20:20:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:04,157 INFO L479 AbstractCegarLoop]: Abstraction has 5351 states and 7217 transitions. [2020-10-12 20:20:04,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5351 states and 7217 transitions. [2020-10-12 20:20:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:20:04,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:04,170 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] [2020-10-12 20:20:04,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:20:04,171 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:04,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:04,171 INFO L82 PathProgramCache]: Analyzing trace with hash 330497902, now seen corresponding path program 1 times [2020-10-12 20:20:04,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:04,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032376450] [2020-10-12 20:20:04,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:04,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:09,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:09,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:20:09,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 20:20:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:09,541 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:09,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:09,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:09,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:09,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:09,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 20:20:09,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:20:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:20:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:09,631 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 20:20:09,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032376450] [2020-10-12 20:20:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:09,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128895875] [2020-10-12 20:20:09,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:20:09,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:20:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:20:09,633 INFO L87 Difference]: Start difference. First operand 5351 states and 7217 transitions. Second operand 9 states. [2020-10-12 20:20:09,935 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:13,101 INFO L93 Difference]: Finished difference Result 15029 states and 20993 transitions. [2020-10-12 20:20:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:20:13,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-12 20:20:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:13,146 INFO L225 Difference]: With dead ends: 15029 [2020-10-12 20:20:13,146 INFO L226 Difference]: Without dead ends: 10401 [2020-10-12 20:20:13,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:20:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2020-10-12 20:20:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 6665. [2020-10-12 20:20:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6665 states. [2020-10-12 20:20:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 8951 transitions. [2020-10-12 20:20:13,505 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 8951 transitions. Word has length 164 [2020-10-12 20:20:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:13,506 INFO L479 AbstractCegarLoop]: Abstraction has 6665 states and 8951 transitions. [2020-10-12 20:20:13,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:20:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 8951 transitions. [2020-10-12 20:20:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:20:13,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:13,518 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] [2020-10-12 20:20:13,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:20:13,518 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:13,519 INFO L82 PathProgramCache]: Analyzing trace with hash 667561655, now seen corresponding path program 1 times [2020-10-12 20:20:13,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:13,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035841124] [2020-10-12 20:20:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:13,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:13,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 20:20:18,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:18,882 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:18,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:20:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:20:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:18,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:20:18,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:18,957 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 20:20:18,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035841124] [2020-10-12 20:20:18,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:18,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:20:18,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678002332] [2020-10-12 20:20:18,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:20:18,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:18,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:20:18,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:20:18,959 INFO L87 Difference]: Start difference. First operand 6665 states and 8951 transitions. Second operand 9 states. [2020-10-12 20:20:19,263 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:20:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:22,317 INFO L93 Difference]: Finished difference Result 18929 states and 26020 transitions. [2020-10-12 20:20:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:20:22,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-10-12 20:20:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:22,349 INFO L225 Difference]: With dead ends: 18929 [2020-10-12 20:20:22,349 INFO L226 Difference]: Without dead ends: 13315 [2020-10-12 20:20:22,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:20:22,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13315 states. [2020-10-12 20:20:22,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 8108. [2020-10-12 20:20:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8108 states. [2020-10-12 20:20:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8108 states to 8108 states and 10771 transitions. [2020-10-12 20:20:22,892 INFO L78 Accepts]: Start accepts. Automaton has 8108 states and 10771 transitions. Word has length 164 [2020-10-12 20:20:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:22,893 INFO L479 AbstractCegarLoop]: Abstraction has 8108 states and 10771 transitions. [2020-10-12 20:20:22,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:20:22,893 INFO L276 IsEmpty]: Start isEmpty. Operand 8108 states and 10771 transitions. [2020-10-12 20:20:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:20:22,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:22,904 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] [2020-10-12 20:20:22,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:20:22,904 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:22,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1933847891, now seen corresponding path program 1 times [2020-10-12 20:20:22,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:22,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205786841] [2020-10-12 20:20:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:22,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:27,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:20:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:28,232 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:28,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:28,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:28,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:28,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:20:28,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:28,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:28,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:28,276 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 20:20:28,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205786841] [2020-10-12 20:20:28,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:28,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63720033] [2020-10-12 20:20:28,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:28,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:28,278 INFO L87 Difference]: Start difference. First operand 8108 states and 10771 transitions. Second operand 5 states. [2020-10-12 20:20:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:32,414 INFO L93 Difference]: Finished difference Result 23455 states and 31185 transitions. [2020-10-12 20:20:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:32,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 20:20:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:32,447 INFO L225 Difference]: With dead ends: 23455 [2020-10-12 20:20:32,447 INFO L226 Difference]: Without dead ends: 15862 [2020-10-12 20:20:32,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:32,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15862 states. [2020-10-12 20:20:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15862 to 15824. [2020-10-12 20:20:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15824 states. [2020-10-12 20:20:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15824 states to 15824 states and 20799 transitions. [2020-10-12 20:20:33,290 INFO L78 Accepts]: Start accepts. Automaton has 15824 states and 20799 transitions. Word has length 164 [2020-10-12 20:20:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:33,290 INFO L479 AbstractCegarLoop]: Abstraction has 15824 states and 20799 transitions. [2020-10-12 20:20:33,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 15824 states and 20799 transitions. [2020-10-12 20:20:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:20:33,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:33,309 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] [2020-10-12 20:20:33,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:20:33,309 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:33,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:33,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1989982607, now seen corresponding path program 1 times [2020-10-12 20:20:33,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:33,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412179069] [2020-10-12 20:20:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:33,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:35,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:38,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:20:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:20:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:20:38,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 20:20:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:20:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:38,644 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:38,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:38,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:38,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:38,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:20:38,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:38,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:38,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:38,683 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 20:20:38,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412179069] [2020-10-12 20:20:38,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:38,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:38,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138171659] [2020-10-12 20:20:38,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:38,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:38,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:38,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:38,685 INFO L87 Difference]: Start difference. First operand 15824 states and 20799 transitions. Second operand 5 states. [2020-10-12 20:20:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:40,889 INFO L93 Difference]: Finished difference Result 25832 states and 34024 transitions. [2020-10-12 20:20:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:40,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-12 20:20:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:40,907 INFO L225 Difference]: With dead ends: 25832 [2020-10-12 20:20:40,908 INFO L226 Difference]: Without dead ends: 10491 [2020-10-12 20:20:40,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:20:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2020-10-12 20:20:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 10490. [2020-10-12 20:20:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10490 states. [2020-10-12 20:20:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 13744 transitions. [2020-10-12 20:20:41,687 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 13744 transitions. Word has length 165 [2020-10-12 20:20:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:41,687 INFO L479 AbstractCegarLoop]: Abstraction has 10490 states and 13744 transitions. [2020-10-12 20:20:41,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 13744 transitions. [2020-10-12 20:20:41,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 20:20:41,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:41,696 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] [2020-10-12 20:20:41,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:20:41,696 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:41,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1269099291, now seen corresponding path program 1 times [2020-10-12 20:20:41,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:41,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411596320] [2020-10-12 20:20:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:42,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:46,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-12 20:20:46,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 20:20:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:46,990 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:47,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:47,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:47,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:47,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:20:47,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:47,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:47,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:47,024 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 20:20:47,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411596320] [2020-10-12 20:20:47,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:47,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:47,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767485326] [2020-10-12 20:20:47,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:47,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:47,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:47,026 INFO L87 Difference]: Start difference. First operand 10490 states and 13744 transitions. Second operand 5 states. [2020-10-12 20:20:47,295 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 20:20:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:50,736 INFO L93 Difference]: Finished difference Result 18355 states and 24099 transitions. [2020-10-12 20:20:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:20:50,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-12 20:20:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:50,756 INFO L225 Difference]: With dead ends: 18355 [2020-10-12 20:20:50,756 INFO L226 Difference]: Without dead ends: 10513 [2020-10-12 20:20:50,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:20:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10513 states. [2020-10-12 20:20:51,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10513 to 10490. [2020-10-12 20:20:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10490 states. [2020-10-12 20:20:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10490 states to 10490 states and 13701 transitions. [2020-10-12 20:20:51,538 INFO L78 Accepts]: Start accepts. Automaton has 10490 states and 13701 transitions. Word has length 167 [2020-10-12 20:20:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:51,539 INFO L479 AbstractCegarLoop]: Abstraction has 10490 states and 13701 transitions. [2020-10-12 20:20:51,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 10490 states and 13701 transitions. [2020-10-12 20:20:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 20:20:51,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:51,547 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] [2020-10-12 20:20:51,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:20:51,547 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1880762615, now seen corresponding path program 1 times [2020-10-12 20:20:51,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:51,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319316697] [2020-10-12 20:20:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:56,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:20:56,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-12 20:20:56,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 20:20:56,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:56,957 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:20:56,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:56,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:57,000 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 20:20:57,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319316697] [2020-10-12 20:20:57,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:57,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:20:57,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202783648] [2020-10-12 20:20:57,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:20:57,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:57,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:20:57,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:20:57,002 INFO L87 Difference]: Start difference. First operand 10490 states and 13701 transitions. Second operand 10 states. [2020-10-12 20:20:57,316 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-12 20:21:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:02,078 INFO L93 Difference]: Finished difference Result 37452 states and 50175 transitions. [2020-10-12 20:21:02,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 20:21:02,079 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2020-10-12 20:21:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:02,111 INFO L225 Difference]: With dead ends: 37452 [2020-10-12 20:21:02,111 INFO L226 Difference]: Without dead ends: 30135 [2020-10-12 20:21:02,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2020-10-12 20:21:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30135 states. [2020-10-12 20:21:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30135 to 19166. [2020-10-12 20:21:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19166 states. [2020-10-12 20:21:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19166 states to 19166 states and 25058 transitions. [2020-10-12 20:21:03,211 INFO L78 Accepts]: Start accepts. Automaton has 19166 states and 25058 transitions. Word has length 168 [2020-10-12 20:21:03,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:03,212 INFO L479 AbstractCegarLoop]: Abstraction has 19166 states and 25058 transitions. [2020-10-12 20:21:03,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:21:03,212 INFO L276 IsEmpty]: Start isEmpty. Operand 19166 states and 25058 transitions. [2020-10-12 20:21:03,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-12 20:21:03,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:03,227 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] [2020-10-12 20:21:03,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:21:03,227 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:03,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:03,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1513582539, now seen corresponding path program 1 times [2020-10-12 20:21:03,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:03,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377516444] [2020-10-12 20:21:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:04,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:04,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 20:21:04,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:21:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1292 [2020-10-12 20:21:04,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:21:04,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 20:21:04,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:04,811 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:04,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:04,860 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 20:21:04,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377516444] [2020-10-12 20:21:04,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:04,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:21:04,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938076744] [2020-10-12 20:21:04,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:21:04,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:04,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:21:04,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:21:04,862 INFO L87 Difference]: Start difference. First operand 19166 states and 25058 transitions. Second operand 4 states. [2020-10-12 20:21:08,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:08,721 INFO L93 Difference]: Finished difference Result 40565 states and 54534 transitions. [2020-10-12 20:21:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:21:08,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-12 20:21:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:08,745 INFO L225 Difference]: With dead ends: 40565 [2020-10-12 20:21:08,745 INFO L226 Difference]: Without dead ends: 24509 [2020-10-12 20:21:08,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:21:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24509 states. [2020-10-12 20:21:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24509 to 22433. [2020-10-12 20:21:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22433 states. [2020-10-12 20:21:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22433 states to 22433 states and 30315 transitions. [2020-10-12 20:21:10,080 INFO L78 Accepts]: Start accepts. Automaton has 22433 states and 30315 transitions. Word has length 168 [2020-10-12 20:21:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:10,080 INFO L479 AbstractCegarLoop]: Abstraction has 22433 states and 30315 transitions. [2020-10-12 20:21:10,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:21:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 22433 states and 30315 transitions. [2020-10-12 20:21:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:21:10,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:10,091 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] [2020-10-12 20:21:10,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:21:10,092 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash 215016106, now seen corresponding path program 1 times [2020-10-12 20:21:10,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:10,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317313489] [2020-10-12 20:21:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:10,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:15,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 20:21:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:15,511 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:15,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:15,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:15,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:21:15,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:15,579 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 20:21:15,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317313489] [2020-10-12 20:21:15,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:15,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:21:15,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868539815] [2020-10-12 20:21:15,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:21:15,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:21:15,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:21:15,581 INFO L87 Difference]: Start difference. First operand 22433 states and 30315 transitions. Second operand 11 states. [2020-10-12 20:21:15,888 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 20:21:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:23,687 INFO L93 Difference]: Finished difference Result 71515 states and 99916 transitions. [2020-10-12 20:21:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 20:21:23,688 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-12 20:21:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:23,765 INFO L225 Difference]: With dead ends: 71515 [2020-10-12 20:21:23,765 INFO L226 Difference]: Without dead ends: 60683 [2020-10-12 20:21:23,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2020-10-12 20:21:23,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60683 states. [2020-10-12 20:21:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60683 to 23152. [2020-10-12 20:21:26,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23152 states. [2020-10-12 20:21:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23152 states to 23152 states and 31087 transitions. [2020-10-12 20:21:26,930 INFO L78 Accepts]: Start accepts. Automaton has 23152 states and 31087 transitions. Word has length 171 [2020-10-12 20:21:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:26,930 INFO L479 AbstractCegarLoop]: Abstraction has 23152 states and 31087 transitions. [2020-10-12 20:21:26,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 20:21:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 23152 states and 31087 transitions. [2020-10-12 20:21:26,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:21:26,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:26,939 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] [2020-10-12 20:21:26,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:21:26,939 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:26,940 INFO L82 PathProgramCache]: Analyzing trace with hash -68591328, now seen corresponding path program 1 times [2020-10-12 20:21:26,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:26,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794324511] [2020-10-12 20:21:26,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:26,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:29,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:29,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-12 20:21:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:29,320 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:29,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:29,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:21:29,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:29,386 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 20:21:29,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794324511] [2020-10-12 20:21:29,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969434680] [2020-10-12 20:21:29,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:21:29,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:21:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:29,388 INFO L87 Difference]: Start difference. First operand 23152 states and 31087 transitions. Second operand 6 states. [2020-10-12 20:21:29,667 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-12 20:21:34,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:34,799 INFO L93 Difference]: Finished difference Result 50572 states and 71220 transitions. [2020-10-12 20:21:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:21:34,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-12 20:21:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:34,843 INFO L225 Difference]: With dead ends: 50572 [2020-10-12 20:21:34,844 INFO L226 Difference]: Without dead ends: 39009 [2020-10-12 20:21:34,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:21:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39009 states. [2020-10-12 20:21:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39009 to 39003. [2020-10-12 20:21:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39003 states. [2020-10-12 20:21:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39003 states to 39003 states and 53577 transitions. [2020-10-12 20:21:38,195 INFO L78 Accepts]: Start accepts. Automaton has 39003 states and 53577 transitions. Word has length 171 [2020-10-12 20:21:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:38,195 INFO L479 AbstractCegarLoop]: Abstraction has 39003 states and 53577 transitions. [2020-10-12 20:21:38,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:21:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39003 states and 53577 transitions. [2020-10-12 20:21:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:21:38,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:38,212 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] [2020-10-12 20:21:38,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:21:38,212 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1338033134, now seen corresponding path program 1 times [2020-10-12 20:21:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:38,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218396787] [2020-10-12 20:21:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:39,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:21:39,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:21:39,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-12 20:21:39,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:21:39,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:21:39,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 20:21:39,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:39,756 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:21:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:39,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:39,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:21:39,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:21:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:21:39,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:39,825 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 20:21:39,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218396787] [2020-10-12 20:21:39,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:39,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:39,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481181803] [2020-10-12 20:21:39,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:21:39,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:21:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:39,828 INFO L87 Difference]: Start difference. First operand 39003 states and 53577 transitions. Second operand 6 states. [2020-10-12 20:21:40,116 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-12 20:21:47,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:47,619 INFO L93 Difference]: Finished difference Result 90069 states and 127293 transitions. [2020-10-12 20:21:47,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:21:47,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2020-10-12 20:21:47,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:47,694 INFO L225 Difference]: With dead ends: 90069 [2020-10-12 20:21:47,694 INFO L226 Difference]: Without dead ends: 57142 [2020-10-12 20:21:47,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:21:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57142 states. [2020-10-12 20:21:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57142 to 57094. [2020-10-12 20:21:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57094 states. [2020-10-12 20:21:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57094 states to 57094 states and 80414 transitions. [2020-10-12 20:21:54,816 INFO L78 Accepts]: Start accepts. Automaton has 57094 states and 80414 transitions. Word has length 171 [2020-10-12 20:21:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:54,816 INFO L479 AbstractCegarLoop]: Abstraction has 57094 states and 80414 transitions. [2020-10-12 20:21:54,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:21:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 57094 states and 80414 transitions. [2020-10-12 20:21:54,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:21:54,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:54,833 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] [2020-10-12 20:21:54,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:21:54,833 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:54,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:54,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1904134373, now seen corresponding path program 1 times [2020-10-12 20:21:54,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:54,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408021021] [2020-10-12 20:21:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:54,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:54,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:21:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:21:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:21:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 20:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 20:21:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:00,387 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-12 20:22:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:00,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:00,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:00,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:00,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:00,456 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 20:22:00,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408021021] [2020-10-12 20:22:00,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:00,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 20:22:00,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532162176] [2020-10-12 20:22:00,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 20:22:00,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:00,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 20:22:00,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 20:22:00,458 INFO L87 Difference]: Start difference. First operand 57094 states and 80414 transitions. Second operand 11 states. [2020-10-12 20:22:00,752 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-12 20:22:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:38,277 INFO L93 Difference]: Finished difference Result 327760 states and 482428 transitions. [2020-10-12 20:22:38,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 20:22:38,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 171 [2020-10-12 20:22:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:38,749 INFO L225 Difference]: With dead ends: 327760 [2020-10-12 20:22:38,749 INFO L226 Difference]: Without dead ends: 287766 [2020-10-12 20:22:38,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:22:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287766 states.