/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:50:35,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:50:35,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:50:35,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:50:35,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:50:35,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:50:35,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:50:35,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:50:35,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:50:35,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:50:35,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:50:35,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:50:35,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:50:35,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:50:35,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:50:35,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:50:35,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:50:35,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:50:35,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:50:35,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:50:35,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:50:35,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:50:35,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:50:35,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:50:35,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:50:35,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:50:35,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:50:35,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:50:35,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:50:35,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:50:35,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:50:35,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:50:35,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:50:35,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:50:35,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:50:35,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:50:35,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:50:35,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:50:35,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:50:35,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:50:35,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:50:35,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:50:35,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:50:35,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:50:35,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:50:35,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:50:35,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:50:35,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:50:35,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:50:35,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:50:35,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:50:35,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:50:35,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:50:35,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:50:35,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:50:35,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:50:35,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:50:35,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:50:35,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:50:35,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:50:35,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:50:35,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:50:35,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:50:35,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:50:35,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:50:35,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:50:35,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:50:35,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:50:35,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:50:35,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:50:35,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:50:35,488 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:50:35,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-13 15:50:35,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b37c36/c7bc1d99edc042688ed2f19c08904af3/FLAGe0703a033 [2020-10-13 15:50:36,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:50:36,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy2.cil.c [2020-10-13 15:50:36,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b37c36/c7bc1d99edc042688ed2f19c08904af3/FLAGe0703a033 [2020-10-13 15:50:36,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f66b37c36/c7bc1d99edc042688ed2f19c08904af3 [2020-10-13 15:50:36,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:50:36,408 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:50:36,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:36,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:50:36,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:50:36,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36, skipping insertion in model container [2020-10-13 15:50:36,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:50:36,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:50:36,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:36,709 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:50:36,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:50:36,909 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:50:36,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36 WrapperNode [2020-10-13 15:50:36,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:50:36,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:50:36,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:50:36,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:50:36,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... [2020-10-13 15:50:36,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:50:36,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:50:36,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:50:36,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:50:36,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:50:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:50:37,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-13 15:50:37,047 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-13 15:50:37,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:50:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:50:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:50:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-13 15:50:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-13 15:50:37,048 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:50:37,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:50:37,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:50:37,713 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:50:37,714 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-13 15:50:37,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:37 BoogieIcfgContainer [2020-10-13 15:50:37,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:50:37,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:50:37,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:50:37,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:50:37,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:50:36" (1/3) ... [2020-10-13 15:50:37,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48722130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:37, skipping insertion in model container [2020-10-13 15:50:37,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:50:36" (2/3) ... [2020-10-13 15:50:37,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48722130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:50:37, skipping insertion in model container [2020-10-13 15:50:37,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:50:37" (3/3) ... [2020-10-13 15:50:37,729 INFO L109 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2020-10-13 15:50:37,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:50:37,749 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:50:37,765 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:50:37,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:50:37,793 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:50:37,793 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:50:37,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:50:37,794 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:50:37,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:50:37,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:50:37,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:50:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states. [2020-10-13 15:50:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:37,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:37,832 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] [2020-10-13 15:50:37,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1201692838, now seen corresponding path program 1 times [2020-10-13 15:50:37,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:37,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180917664] [2020-10-13 15:50:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:42,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:42,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:50:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-10-13 15:50:42,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 15:50:42,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:50:42,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:50:42,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:42,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:42,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:42,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:42,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:42,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180917664] [2020-10-13 15:50:42,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:42,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:42,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555139035] [2020-10-13 15:50:42,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:42,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:42,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:42,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:42,381 INFO L87 Difference]: Start difference. First operand 158 states. Second operand 4 states. [2020-10-13 15:50:42,557 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 15:50:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:43,371 INFO L93 Difference]: Finished difference Result 340 states and 591 transitions. [2020-10-13 15:50:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:43,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:43,392 INFO L225 Difference]: With dead ends: 340 [2020-10-13 15:50:43,392 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 15:50:43,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 15:50:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-13 15:50:43,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:50:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 302 transitions. [2020-10-13 15:50:43,480 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 302 transitions. Word has length 46 [2020-10-13 15:50:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:43,480 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 302 transitions. [2020-10-13 15:50:43,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 302 transitions. [2020-10-13 15:50:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:43,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:43,483 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] [2020-10-13 15:50:43,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:50:43,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash -792451868, now seen corresponding path program 1 times [2020-10-13 15:50:43,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:43,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900189604] [2020-10-13 15:50:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:44,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:46,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:46,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:50:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3214 [2020-10-13 15:50:46,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:50:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 15:50:46,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:50:46,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:46,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:46,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:46,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:46,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:46,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:46,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:50:46,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:46,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900189604] [2020-10-13 15:50:46,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905981434] [2020-10-13 15:50:46,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:46,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:46,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:46,868 INFO L87 Difference]: Start difference. First operand 181 states and 302 transitions. Second operand 4 states. [2020-10-13 15:50:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:47,544 INFO L93 Difference]: Finished difference Result 340 states and 560 transitions. [2020-10-13 15:50:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:50:47,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:47,548 INFO L225 Difference]: With dead ends: 340 [2020-10-13 15:50:47,549 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 15:50:47,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 15:50:47,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-13 15:50:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:50:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 298 transitions. [2020-10-13 15:50:47,599 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 298 transitions. Word has length 46 [2020-10-13 15:50:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:47,600 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 298 transitions. [2020-10-13 15:50:47,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 298 transitions. [2020-10-13 15:50:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:47,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:47,607 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] [2020-10-13 15:50:47,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:50:47,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:47,608 INFO L82 PathProgramCache]: Analyzing trace with hash 982838120, now seen corresponding path program 1 times [2020-10-13 15:50:47,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:47,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457205939] [2020-10-13 15:50:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:47,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:48,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:49,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:50:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-13 15:50:49,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:49,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 15:50:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:50:49,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:49,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:49,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:49,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:49,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:50:49,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:49,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:49,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:49,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457205939] [2020-10-13 15:50:49,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:49,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:49,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280131026] [2020-10-13 15:50:49,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:49,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:49,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:49,771 INFO L87 Difference]: Start difference. First operand 181 states and 298 transitions. Second operand 4 states. [2020-10-13 15:50:49,903 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 15:50:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:50,474 INFO L93 Difference]: Finished difference Result 371 states and 613 transitions. [2020-10-13 15:50:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:50,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:50,479 INFO L225 Difference]: With dead ends: 371 [2020-10-13 15:50:50,479 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 15:50:50,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 15:50:50,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-13 15:50:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:50:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 284 transitions. [2020-10-13 15:50:50,516 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 284 transitions. Word has length 46 [2020-10-13 15:50:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:50,519 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 284 transitions. [2020-10-13 15:50:50,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 284 transitions. [2020-10-13 15:50:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:50,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:50,526 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] [2020-10-13 15:50:50,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:50:50,527 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash 439949284, now seen corresponding path program 1 times [2020-10-13 15:50:50,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:50,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992749945] [2020-10-13 15:50:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:50,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:52,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:52,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:50:52,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-13 15:50:52,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:52,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:52,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:50:52,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:52,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:52,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:52,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:50:52,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:52,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:52,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992749945] [2020-10-13 15:50:52,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:52,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:52,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976614402] [2020-10-13 15:50:52,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:52,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:52,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:52,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:52,360 INFO L87 Difference]: Start difference. First operand 181 states and 284 transitions. Second operand 4 states. [2020-10-13 15:50:52,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:52,902 INFO L93 Difference]: Finished difference Result 370 states and 584 transitions. [2020-10-13 15:50:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:52,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:52,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:52,905 INFO L225 Difference]: With dead ends: 370 [2020-10-13 15:50:52,906 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 15:50:52,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 15:50:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-13 15:50:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:50:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 274 transitions. [2020-10-13 15:50:52,924 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 274 transitions. Word has length 46 [2020-10-13 15:50:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:52,925 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 274 transitions. [2020-10-13 15:50:52,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 274 transitions. [2020-10-13 15:50:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:52,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:52,926 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] [2020-10-13 15:50:52,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:50:52,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash -547394584, now seen corresponding path program 1 times [2020-10-13 15:50:52,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:52,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559588019] [2020-10-13 15:50:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:52,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:53,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:50:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-10-13 15:50:54,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:54,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:50:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:54,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:54,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:54,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:50:54,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:54,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:54,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559588019] [2020-10-13 15:50:54,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:54,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:54,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984924464] [2020-10-13 15:50:54,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:54,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:54,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:54,192 INFO L87 Difference]: Start difference. First operand 181 states and 274 transitions. Second operand 4 states. [2020-10-13 15:50:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:54,719 INFO L93 Difference]: Finished difference Result 369 states and 563 transitions. [2020-10-13 15:50:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:54,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:54,722 INFO L225 Difference]: With dead ends: 369 [2020-10-13 15:50:54,722 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 15:50:54,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 15:50:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2020-10-13 15:50:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 15:50:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 264 transitions. [2020-10-13 15:50:54,746 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 264 transitions. Word has length 46 [2020-10-13 15:50:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:54,747 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 264 transitions. [2020-10-13 15:50:54,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 264 transitions. [2020-10-13 15:50:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:54,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:54,751 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] [2020-10-13 15:50:54,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:50:54,751 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash -102060504, now seen corresponding path program 1 times [2020-10-13 15:50:54,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:54,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563283484] [2020-10-13 15:50:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:55,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:55,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:50:55,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-10-13 15:50:55,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:55,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 15:50:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:55,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:55,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:55,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:55,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:55,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:50:55,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:55,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:55,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:55,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563283484] [2020-10-13 15:50:55,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:55,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:55,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330864859] [2020-10-13 15:50:55,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:55,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:55,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:55,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:55,898 INFO L87 Difference]: Start difference. First operand 181 states and 264 transitions. Second operand 4 states. [2020-10-13 15:50:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:56,616 INFO L93 Difference]: Finished difference Result 514 states and 763 transitions. [2020-10-13 15:50:56,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:56,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:56,620 INFO L225 Difference]: With dead ends: 514 [2020-10-13 15:50:56,620 INFO L226 Difference]: Without dead ends: 369 [2020-10-13 15:50:56,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-10-13 15:50:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 317. [2020-10-13 15:50:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-10-13 15:50:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 466 transitions. [2020-10-13 15:50:56,647 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 466 transitions. Word has length 46 [2020-10-13 15:50:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:56,647 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 466 transitions. [2020-10-13 15:50:56,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 466 transitions. [2020-10-13 15:50:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:56,649 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] [2020-10-13 15:50:56,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:50:56,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:56,650 INFO L82 PathProgramCache]: Analyzing trace with hash -491147098, now seen corresponding path program 1 times [2020-10-13 15:50:56,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:56,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209137019] [2020-10-13 15:50:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:56,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 745 [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:50:57,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:50:57,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:50:57,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:57,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:57,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:57,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:57,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:57,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:50:57,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:57,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:57,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:57,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209137019] [2020-10-13 15:50:57,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:57,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:57,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073825651] [2020-10-13 15:50:57,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:57,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:57,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:57,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:57,518 INFO L87 Difference]: Start difference. First operand 317 states and 466 transitions. Second operand 4 states. [2020-10-13 15:50:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:58,346 INFO L93 Difference]: Finished difference Result 935 states and 1399 transitions. [2020-10-13 15:50:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:58,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:58,353 INFO L225 Difference]: With dead ends: 935 [2020-10-13 15:50:58,354 INFO L226 Difference]: Without dead ends: 651 [2020-10-13 15:50:58,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:58,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-10-13 15:50:58,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 585. [2020-10-13 15:50:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-13 15:50:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 864 transitions. [2020-10-13 15:50:58,424 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 864 transitions. Word has length 46 [2020-10-13 15:50:58,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:58,425 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 864 transitions. [2020-10-13 15:50:58,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:58,425 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 864 transitions. [2020-10-13 15:50:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 15:50:58,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:58,427 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] [2020-10-13 15:50:58,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:50:58,428 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1336313469, now seen corresponding path program 1 times [2020-10-13 15:50:58,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:58,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652239215] [2020-10-13 15:50:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:58,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:50:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:50:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 15:50:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:50:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:58,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:50:58,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:50:58,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:50:58,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:50:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:50:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:50:58,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652239215] [2020-10-13 15:50:58,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:50:58,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:50:58,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599406440] [2020-10-13 15:50:58,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:50:58,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:50:58,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:50:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:50:58,955 INFO L87 Difference]: Start difference. First operand 585 states and 864 transitions. Second operand 4 states. [2020-10-13 15:50:59,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:50:59,855 INFO L93 Difference]: Finished difference Result 1710 states and 2591 transitions. [2020-10-13 15:50:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:50:59,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 15:50:59,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:50:59,866 INFO L225 Difference]: With dead ends: 1710 [2020-10-13 15:50:59,867 INFO L226 Difference]: Without dead ends: 1167 [2020-10-13 15:50:59,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:50:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-10-13 15:50:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1090. [2020-10-13 15:50:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1090 states. [2020-10-13 15:50:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1653 transitions. [2020-10-13 15:50:59,955 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1653 transitions. Word has length 46 [2020-10-13 15:50:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:50:59,956 INFO L479 AbstractCegarLoop]: Abstraction has 1090 states and 1653 transitions. [2020-10-13 15:50:59,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:50:59,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1653 transitions. [2020-10-13 15:50:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 15:50:59,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:50:59,959 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:50:59,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:50:59,960 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:50:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:50:59,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2136096228, now seen corresponding path program 1 times [2020-10-13 15:50:59,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:50:59,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101676196] [2020-10-13 15:50:59,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:50:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:50:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:01,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:04,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:04,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 15:51:04,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:51:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:51:04,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 15:51:04,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:51:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:05,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:05,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:05,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:05,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:05,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:05,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:05,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:05,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:05,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:05,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:51:05,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:05,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:05,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101676196] [2020-10-13 15:51:05,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:05,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:51:05,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099234418] [2020-10-13 15:51:05,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:51:05,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:51:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:51:05,132 INFO L87 Difference]: Start difference. First operand 1090 states and 1653 transitions. Second operand 5 states. [2020-10-13 15:51:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:06,609 INFO L93 Difference]: Finished difference Result 3533 states and 5545 transitions. [2020-10-13 15:51:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 15:51:06,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-13 15:51:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:06,630 INFO L225 Difference]: With dead ends: 3533 [2020-10-13 15:51:06,631 INFO L226 Difference]: Without dead ends: 2176 [2020-10-13 15:51:06,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-10-13 15:51:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1979. [2020-10-13 15:51:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1979 states. [2020-10-13 15:51:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 3058 transitions. [2020-10-13 15:51:06,820 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 3058 transitions. Word has length 66 [2020-10-13 15:51:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:06,820 INFO L479 AbstractCegarLoop]: Abstraction has 1979 states and 3058 transitions. [2020-10-13 15:51:06,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:51:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 3058 transitions. [2020-10-13 15:51:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 15:51:06,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:06,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:06,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:51:06,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:06,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:06,825 INFO L82 PathProgramCache]: Analyzing trace with hash 647542734, now seen corresponding path program 1 times [2020-10-13 15:51:06,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:06,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337005251] [2020-10-13 15:51:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:11,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 15:51:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:11,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:11,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:11,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:12,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:51:12,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:51:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:12,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 15:51:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:12,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:12,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:12,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:12,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:12,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:51:12,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337005251] [2020-10-13 15:51:12,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:12,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:12,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163830708] [2020-10-13 15:51:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:12,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:12,089 INFO L87 Difference]: Start difference. First operand 1979 states and 3058 transitions. Second operand 8 states. [2020-10-13 15:51:15,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:15,041 INFO L93 Difference]: Finished difference Result 6878 states and 11434 transitions. [2020-10-13 15:51:15,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:51:15,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-10-13 15:51:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:15,083 INFO L225 Difference]: With dead ends: 6878 [2020-10-13 15:51:15,083 INFO L226 Difference]: Without dead ends: 4499 [2020-10-13 15:51:15,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-13 15:51:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2020-10-13 15:51:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 3628. [2020-10-13 15:51:15,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3628 states. [2020-10-13 15:51:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5942 transitions. [2020-10-13 15:51:15,511 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5942 transitions. Word has length 75 [2020-10-13 15:51:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:15,512 INFO L479 AbstractCegarLoop]: Abstraction has 3628 states and 5942 transitions. [2020-10-13 15:51:15,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5942 transitions. [2020-10-13 15:51:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 15:51:15,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:15,525 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:15,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:51:15,526 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:15,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:15,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1616880125, now seen corresponding path program 1 times [2020-10-13 15:51:15,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:15,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772763166] [2020-10-13 15:51:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:15,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 15:51:20,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 15:51:20,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:20,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:20,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:20,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:20,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:20,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:20,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:51:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:20,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:20,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 15:51:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 15:51:20,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:20,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 15:51:20,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 15:51:20,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:20,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 15:51:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 15:51:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:20,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:20,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:20,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:20,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772763166] [2020-10-13 15:51:20,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:20,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 15:51:20,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289732026] [2020-10-13 15:51:20,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:20,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:20,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:20,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:20,760 INFO L87 Difference]: Start difference. First operand 3628 states and 5942 transitions. Second operand 7 states. [2020-10-13 15:51:22,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:22,837 INFO L93 Difference]: Finished difference Result 8318 states and 13632 transitions. [2020-10-13 15:51:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:51:22,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-13 15:51:22,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:22,873 INFO L225 Difference]: With dead ends: 8318 [2020-10-13 15:51:22,873 INFO L226 Difference]: Without dead ends: 4764 [2020-10-13 15:51:22,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-13 15:51:22,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2020-10-13 15:51:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 3771. [2020-10-13 15:51:23,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-13 15:51:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6031 transitions. [2020-10-13 15:51:23,271 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6031 transitions. Word has length 97 [2020-10-13 15:51:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:23,271 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 6031 transitions. [2020-10-13 15:51:23,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:23,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6031 transitions. [2020-10-13 15:51:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:51:23,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:23,285 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:23,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:51:23,285 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:23,286 INFO L82 PathProgramCache]: Analyzing trace with hash 342871604, now seen corresponding path program 1 times [2020-10-13 15:51:23,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:23,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105457039] [2020-10-13 15:51:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:26,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:26,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 15:51:28,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 15:51:28,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:51:28,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:51:28,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:51:28,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:28,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:28,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:28,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:51:28,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:28,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:28,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 15:51:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:28,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:28,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:51:28,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:28,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:28,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:28,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:28,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:28,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:28,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:28,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:28,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:28,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:28,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:28,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:28,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:51:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:28,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105457039] [2020-10-13 15:51:28,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:28,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:51:28,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388715960] [2020-10-13 15:51:28,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:51:28,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:28,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:51:28,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:51:28,591 INFO L87 Difference]: Start difference. First operand 3771 states and 6031 transitions. Second operand 9 states. [2020-10-13 15:51:31,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:31,653 INFO L93 Difference]: Finished difference Result 19063 states and 33023 transitions. [2020-10-13 15:51:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:51:31,653 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-10-13 15:51:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:31,785 INFO L225 Difference]: With dead ends: 19063 [2020-10-13 15:51:31,785 INFO L226 Difference]: Without dead ends: 15366 [2020-10-13 15:51:31,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-13 15:51:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2020-10-13 15:51:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 11761. [2020-10-13 15:51:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11761 states. [2020-10-13 15:51:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11761 states to 11761 states and 19925 transitions. [2020-10-13 15:51:32,913 INFO L78 Accepts]: Start accepts. Automaton has 11761 states and 19925 transitions. Word has length 121 [2020-10-13 15:51:32,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:32,914 INFO L479 AbstractCegarLoop]: Abstraction has 11761 states and 19925 transitions. [2020-10-13 15:51:32,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:51:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 11761 states and 19925 transitions. [2020-10-13 15:51:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 15:51:32,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:32,951 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:32,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:51:32,952 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:32,952 INFO L82 PathProgramCache]: Analyzing trace with hash -695712970, now seen corresponding path program 1 times [2020-10-13 15:51:32,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:32,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38643116] [2020-10-13 15:51:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:32,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:32,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:33,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:51:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:37,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:38,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:38,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 15:51:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:38,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:51:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:38,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:51:38,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38643116] [2020-10-13 15:51:38,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:38,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 15:51:38,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831258871] [2020-10-13 15:51:38,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 15:51:38,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:38,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 15:51:38,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:51:38,175 INFO L87 Difference]: Start difference. First operand 11761 states and 19925 transitions. Second operand 7 states. [2020-10-13 15:51:39,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:39,869 INFO L93 Difference]: Finished difference Result 25349 states and 42855 transitions. [2020-10-13 15:51:39,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 15:51:39,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-13 15:51:39,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:39,929 INFO L225 Difference]: With dead ends: 25349 [2020-10-13 15:51:39,930 INFO L226 Difference]: Without dead ends: 13662 [2020-10-13 15:51:39,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-10-13 15:51:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13662 states. [2020-10-13 15:51:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13662 to 11707. [2020-10-13 15:51:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11707 states. [2020-10-13 15:51:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11707 states to 11707 states and 19857 transitions. [2020-10-13 15:51:40,903 INFO L78 Accepts]: Start accepts. Automaton has 11707 states and 19857 transitions. Word has length 121 [2020-10-13 15:51:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:40,903 INFO L479 AbstractCegarLoop]: Abstraction has 11707 states and 19857 transitions. [2020-10-13 15:51:40,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 15:51:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11707 states and 19857 transitions. [2020-10-13 15:51:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 15:51:40,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:40,938 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:40,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 15:51:40,939 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:40,939 INFO L82 PathProgramCache]: Analyzing trace with hash -301930410, now seen corresponding path program 1 times [2020-10-13 15:51:40,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:40,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757121267] [2020-10-13 15:51:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:40,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-13 15:51:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 15:51:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:51:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 15:51:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:51:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:46,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 15:51:46,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:46,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:46,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:46,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:46,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 15:51:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:51:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 15:51:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:46,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:46,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 15:51:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:46,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:51:46,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757121267] [2020-10-13 15:51:46,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:51:46,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:51:46,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391416565] [2020-10-13 15:51:46,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:51:46,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:46,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:51:46,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:51:46,196 INFO L87 Difference]: Start difference. First operand 11707 states and 19857 transitions. Second operand 8 states. [2020-10-13 15:51:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:51:48,343 INFO L93 Difference]: Finished difference Result 25855 states and 45049 transitions. [2020-10-13 15:51:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 15:51:48,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-10-13 15:51:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:51:48,416 INFO L225 Difference]: With dead ends: 25855 [2020-10-13 15:51:48,416 INFO L226 Difference]: Without dead ends: 14222 [2020-10-13 15:51:48,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-13 15:51:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14222 states. [2020-10-13 15:51:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14222 to 11172. [2020-10-13 15:51:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11172 states. [2020-10-13 15:51:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11172 states to 11172 states and 18460 transitions. [2020-10-13 15:51:49,458 INFO L78 Accepts]: Start accepts. Automaton has 11172 states and 18460 transitions. Word has length 128 [2020-10-13 15:51:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:51:49,458 INFO L479 AbstractCegarLoop]: Abstraction has 11172 states and 18460 transitions. [2020-10-13 15:51:49,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:51:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11172 states and 18460 transitions. [2020-10-13 15:51:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:51:49,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:51:49,487 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:51:49,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 15:51:49,488 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:51:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:51:49,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1188421517, now seen corresponding path program 1 times [2020-10-13 15:51:49,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:51:49,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942503582] [2020-10-13 15:51:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:51:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:50,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:51:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:51:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:51:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:51:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:51:54,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:51:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 15:51:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:51:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:54,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:51:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:51:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:54,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:51:54,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:51:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:51:54,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:51:54,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 15:51:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:51:54,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:51:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:51:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:51:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:51:54,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:51:54,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:51:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 15:51:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:51:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:51:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:51:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:51:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:51:54,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942503582] [2020-10-13 15:51:54,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:51:54,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:51:54,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369174216] [2020-10-13 15:51:54,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:51:54,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:51:54,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:51:54,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:51:54,826 INFO L87 Difference]: Start difference. First operand 11172 states and 18460 transitions. Second operand 10 states. [2020-10-13 15:52:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:00,067 INFO L93 Difference]: Finished difference Result 54982 states and 96363 transitions. [2020-10-13 15:52:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-13 15:52:00,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-10-13 15:52:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:00,277 INFO L225 Difference]: With dead ends: 54982 [2020-10-13 15:52:00,277 INFO L226 Difference]: Without dead ends: 43909 [2020-10-13 15:52:00,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 15:52:00,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43909 states. [2020-10-13 15:52:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43909 to 31107. [2020-10-13 15:52:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31107 states. [2020-10-13 15:52:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31107 states to 31107 states and 51935 transitions. [2020-10-13 15:52:04,059 INFO L78 Accepts]: Start accepts. Automaton has 31107 states and 51935 transitions. Word has length 129 [2020-10-13 15:52:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:04,059 INFO L479 AbstractCegarLoop]: Abstraction has 31107 states and 51935 transitions. [2020-10-13 15:52:04,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:52:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 31107 states and 51935 transitions. [2020-10-13 15:52:04,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-13 15:52:04,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:04,104 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:04,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 15:52:04,104 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1824373493, now seen corresponding path program 1 times [2020-10-13 15:52:04,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:04,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303122201] [2020-10-13 15:52:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:04,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:04,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:07,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-13 15:52:07,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:52:07,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3709 [2020-10-13 15:52:07,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:52:07,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 15:52:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:07,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:07,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:52:07,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:07,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:07,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:07,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:07,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 15:52:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:07,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:07,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:08,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:08,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 15:52:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:08,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:08,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:08,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:08,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:08,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 15:52:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:08,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:08,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 15:52:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:08,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:08,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:08,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:08,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303122201] [2020-10-13 15:52:08,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:08,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:52:08,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252218397] [2020-10-13 15:52:08,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:52:08,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:08,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:52:08,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:52:08,062 INFO L87 Difference]: Start difference. First operand 31107 states and 51935 transitions. Second operand 8 states. [2020-10-13 15:52:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:11,469 INFO L93 Difference]: Finished difference Result 68600 states and 114802 transitions. [2020-10-13 15:52:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 15:52:11,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2020-10-13 15:52:11,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:11,659 INFO L225 Difference]: With dead ends: 68600 [2020-10-13 15:52:11,659 INFO L226 Difference]: Without dead ends: 37600 [2020-10-13 15:52:11,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:52:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37600 states. [2020-10-13 15:52:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37600 to 30684. [2020-10-13 15:52:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30684 states. [2020-10-13 15:52:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30684 states to 30684 states and 51288 transitions. [2020-10-13 15:52:14,119 INFO L78 Accepts]: Start accepts. Automaton has 30684 states and 51288 transitions. Word has length 129 [2020-10-13 15:52:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:14,120 INFO L479 AbstractCegarLoop]: Abstraction has 30684 states and 51288 transitions. [2020-10-13 15:52:14,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:52:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 30684 states and 51288 transitions. [2020-10-13 15:52:14,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 15:52:14,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:14,154 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:14,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 15:52:14,154 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:14,154 INFO L82 PathProgramCache]: Analyzing trace with hash -414719773, now seen corresponding path program 1 times [2020-10-13 15:52:14,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:14,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011265698] [2020-10-13 15:52:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:14,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 15:52:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 15:52:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:19,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:19,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:52:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:52:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:19,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:19,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:52:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 15:52:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:19,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:19,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 15:52:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 15:52:19,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 15:52:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:19,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:19,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:52:19,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011265698] [2020-10-13 15:52:19,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:52:19,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:52:19,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051524644] [2020-10-13 15:52:19,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:19,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:19,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:19,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:19,430 INFO L87 Difference]: Start difference. First operand 30684 states and 51288 transitions. Second operand 9 states. [2020-10-13 15:52:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:23,812 INFO L93 Difference]: Finished difference Result 72623 states and 124668 transitions. [2020-10-13 15:52:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 15:52:23,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 136 [2020-10-13 15:52:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:24,034 INFO L225 Difference]: With dead ends: 72623 [2020-10-13 15:52:24,034 INFO L226 Difference]: Without dead ends: 42046 [2020-10-13 15:52:24,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2020-10-13 15:52:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42046 states. [2020-10-13 15:52:26,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42046 to 31414. [2020-10-13 15:52:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31414 states. [2020-10-13 15:52:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31414 states to 31414 states and 52136 transitions. [2020-10-13 15:52:26,519 INFO L78 Accepts]: Start accepts. Automaton has 31414 states and 52136 transitions. Word has length 136 [2020-10-13 15:52:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:26,520 INFO L479 AbstractCegarLoop]: Abstraction has 31414 states and 52136 transitions. [2020-10-13 15:52:26,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:52:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 31414 states and 52136 transitions. [2020-10-13 15:52:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 15:52:26,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:26,569 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:26,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 15:52:26,570 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:26,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:26,570 INFO L82 PathProgramCache]: Analyzing trace with hash 2137448252, now seen corresponding path program 1 times [2020-10-13 15:52:26,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:26,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263977342] [2020-10-13 15:52:26,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:27,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:27,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:27,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 15:52:31,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:52:31,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:52:31,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-13 15:52:31,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:52:31,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:52:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:31,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:31,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:31,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:31,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 15:52:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:31,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:31,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:31,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 15:52:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:31,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:52:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 15:52:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:31,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:31,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:31,845 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:52:31,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263977342] [2020-10-13 15:52:31,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:31,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 15:52:31,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498431270] [2020-10-13 15:52:31,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:52:31,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:31,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:52:31,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:52:31,847 INFO L87 Difference]: Start difference. First operand 31414 states and 52136 transitions. Second operand 9 states. [2020-10-13 15:52:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:36,837 INFO L93 Difference]: Finished difference Result 69731 states and 118178 transitions. [2020-10-13 15:52:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 15:52:36,838 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2020-10-13 15:52:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:37,156 INFO L225 Difference]: With dead ends: 69731 [2020-10-13 15:52:37,157 INFO L226 Difference]: Without dead ends: 39558 [2020-10-13 15:52:37,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-13 15:52:37,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39558 states. [2020-10-13 15:52:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39558 to 28978. [2020-10-13 15:52:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28978 states. [2020-10-13 15:52:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28978 states to 28978 states and 47516 transitions. [2020-10-13 15:52:39,051 INFO L78 Accepts]: Start accepts. Automaton has 28978 states and 47516 transitions. Word has length 141 [2020-10-13 15:52:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:52:39,052 INFO L479 AbstractCegarLoop]: Abstraction has 28978 states and 47516 transitions. [2020-10-13 15:52:39,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:52:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 28978 states and 47516 transitions. [2020-10-13 15:52:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-13 15:52:39,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:52:39,099 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:52:39,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 15:52:39,100 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:52:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:52:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash -857340427, now seen corresponding path program 1 times [2020-10-13 15:52:39,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:52:39,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670308980] [2020-10-13 15:52:39,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:52:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:39,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:39,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-13 15:52:41,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:52:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2129 [2020-10-13 15:52:41,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 15:52:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:52:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:52:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:52:41,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:52:41,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 15:52:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 15:52:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:52:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:52:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 15:52:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:52:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:52:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:41,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:41,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:41,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 15:52:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:52:41,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:52:41,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:52:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:52:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:52:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 15:52:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:52:41,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:41,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:52:41,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 15:52:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:52:41,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:52:41,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:52:41,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:52:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:52:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 15:52:41,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670308980] [2020-10-13 15:52:41,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:52:41,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 15:52:41,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121979822] [2020-10-13 15:52:41,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 15:52:41,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:52:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 15:52:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-13 15:52:41,612 INFO L87 Difference]: Start difference. First operand 28978 states and 47516 transitions. Second operand 11 states. [2020-10-13 15:52:53,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:52:53,583 INFO L93 Difference]: Finished difference Result 154501 states and 266760 transitions. [2020-10-13 15:52:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-13 15:52:53,584 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2020-10-13 15:52:53,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:52:54,088 INFO L225 Difference]: With dead ends: 154501 [2020-10-13 15:52:54,089 INFO L226 Difference]: Without dead ends: 125692 [2020-10-13 15:52:54,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 15:52:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125692 states. [2020-10-13 15:53:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125692 to 86999. [2020-10-13 15:53:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86999 states. [2020-10-13 15:53:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86999 states to 86999 states and 142941 transitions. [2020-10-13 15:53:02,565 INFO L78 Accepts]: Start accepts. Automaton has 86999 states and 142941 transitions. Word has length 139 [2020-10-13 15:53:02,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:02,565 INFO L479 AbstractCegarLoop]: Abstraction has 86999 states and 142941 transitions. [2020-10-13 15:53:02,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 15:53:02,565 INFO L276 IsEmpty]: Start isEmpty. Operand 86999 states and 142941 transitions. [2020-10-13 15:53:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 15:53:02,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:02,651 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:02,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 15:53:02,652 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:02,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:02,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1210322596, now seen corresponding path program 1 times [2020-10-13 15:53:02,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:02,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740324703] [2020-10-13 15:53:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:02,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:03,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:53:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:53:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 15:53:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:07,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:07,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:07,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 15:53:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:07,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 15:53:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:53:07,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 15:53:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:07,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:07,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:07,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:53:07,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740324703] [2020-10-13 15:53:07,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:53:07,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:53:07,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766537463] [2020-10-13 15:53:07,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:53:07,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:07,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:53:07,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:53:07,908 INFO L87 Difference]: Start difference. First operand 86999 states and 142941 transitions. Second operand 9 states. [2020-10-13 15:53:17,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:17,813 INFO L93 Difference]: Finished difference Result 193544 states and 320385 transitions. [2020-10-13 15:53:17,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 15:53:17,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 142 [2020-10-13 15:53:17,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:18,163 INFO L225 Difference]: With dead ends: 193544 [2020-10-13 15:53:18,164 INFO L226 Difference]: Without dead ends: 106714 [2020-10-13 15:53:18,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-13 15:53:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106714 states. [2020-10-13 15:53:24,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106714 to 85966. [2020-10-13 15:53:24,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85966 states. [2020-10-13 15:53:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85966 states to 85966 states and 141450 transitions. [2020-10-13 15:53:24,474 INFO L78 Accepts]: Start accepts. Automaton has 85966 states and 141450 transitions. Word has length 142 [2020-10-13 15:53:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:24,474 INFO L479 AbstractCegarLoop]: Abstraction has 85966 states and 141450 transitions. [2020-10-13 15:53:24,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:53:24,474 INFO L276 IsEmpty]: Start isEmpty. Operand 85966 states and 141450 transitions. [2020-10-13 15:53:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 15:53:24,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:24,554 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:24,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 15:53:24,554 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:24,554 INFO L82 PathProgramCache]: Analyzing trace with hash 847374940, now seen corresponding path program 1 times [2020-10-13 15:53:24,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:24,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181754029] [2020-10-13 15:53:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:24,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:53:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-13 15:53:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 15:53:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:53:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:53:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:53:29,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:53:29,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:53:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:53:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 15:53:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:53:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:53:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 15:53:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:53:29,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:53:29,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:53:29,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 15:53:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:53:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:53:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:53:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:53:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:53:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:53:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:53:29,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:53:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:53:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 15:53:29,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181754029] [2020-10-13 15:53:29,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:53:29,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:53:29,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871151818] [2020-10-13 15:53:29,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:53:29,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:53:29,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:53:29,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:53:29,873 INFO L87 Difference]: Start difference. First operand 85966 states and 141450 transitions. Second operand 10 states. [2020-10-13 15:53:42,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:53:42,767 INFO L93 Difference]: Finished difference Result 241054 states and 407495 transitions. [2020-10-13 15:53:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 15:53:42,768 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2020-10-13 15:53:42,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:53:43,244 INFO L225 Difference]: With dead ends: 241054 [2020-10-13 15:53:43,244 INFO L226 Difference]: Without dead ends: 125086 [2020-10-13 15:53:44,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 15:53:44,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125086 states. [2020-10-13 15:53:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125086 to 91420. [2020-10-13 15:53:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91420 states. [2020-10-13 15:53:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91420 states to 91420 states and 145359 transitions. [2020-10-13 15:53:55,303 INFO L78 Accepts]: Start accepts. Automaton has 91420 states and 145359 transitions. Word has length 150 [2020-10-13 15:53:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:53:55,303 INFO L479 AbstractCegarLoop]: Abstraction has 91420 states and 145359 transitions. [2020-10-13 15:53:55,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:53:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 91420 states and 145359 transitions. [2020-10-13 15:53:55,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-13 15:53:55,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:53:55,360 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:53:55,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 15:53:55,360 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:53:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:53:55,360 INFO L82 PathProgramCache]: Analyzing trace with hash 947350251, now seen corresponding path program 1 times [2020-10-13 15:53:55,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:53:55,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159547124] [2020-10-13 15:53:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:53:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:53:55,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:53:58,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:54:00,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:54:00,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:54:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:54:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 15:54:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 15:54:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:54:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 15:54:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 15:54:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:54:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 15:54:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 15:54:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:54:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:54:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:54:00,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 15:54:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 15:54:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:54:00,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:54:00,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:54:00,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 15:54:00,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:54:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:54:00,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:54:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:54:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 15:54:00,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:54:00,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:54:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 15:54:00,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159547124] [2020-10-13 15:54:00,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:54:00,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:54:00,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397221547] [2020-10-13 15:54:00,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:54:00,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:54:00,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:54:00,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:54:00,650 INFO L87 Difference]: Start difference. First operand 91420 states and 145359 transitions. Second operand 10 states. [2020-10-13 15:54:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:54:11,562 INFO L93 Difference]: Finished difference Result 211021 states and 340711 transitions. [2020-10-13 15:54:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 15:54:11,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-13 15:54:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:54:11,966 INFO L225 Difference]: With dead ends: 211021 [2020-10-13 15:54:11,968 INFO L226 Difference]: Without dead ends: 120605 [2020-10-13 15:54:12,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=302, Invalid=958, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 15:54:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120605 states.