/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/systemc/toy.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:10:07,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:10:07,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:10:07,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:10:07,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:10:07,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:10:07,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:10:07,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:10:07,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:10:07,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:10:07,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:10:07,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:10:07,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:10:07,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:10:07,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:10:07,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:10:07,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:10:07,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:10:07,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:10:07,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:10:07,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:10:07,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:10:07,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:10:07,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:10:07,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:10:07,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:10:07,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:10:07,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:10:07,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:10:08,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:10:08,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:10:08,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:10:08,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:10:08,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:10:08,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:10:08,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:10:08,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:10:08,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:10:08,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:10:08,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:10:08,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:10:08,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 21:10:08,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:10:08,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:10:08,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:10:08,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:10:08,057 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:10:08,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:10:08,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:10:08,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:10:08,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:10:08,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:10:08,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:10:08,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:10:08,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:10:08,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:10:08,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:10:08,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:10:08,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:10:08,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:10:08,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:10:08,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:10:08,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:10:08,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:10:08,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:10:08,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:10:08,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:10:08,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:10:08,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:10:08,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:10:08,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:10:08,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:10:08,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:10:08,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:10:08,399 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:10:08,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:10:08,401 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:10:08,402 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy.cil.c [2020-10-12 21:10:08,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36c3cec/f1d703486ecf4998995b3eb14197fd2a/FLAG35fff60f3 [2020-10-12 21:10:08,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:10:08,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/toy.cil.c [2020-10-12 21:10:08,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36c3cec/f1d703486ecf4998995b3eb14197fd2a/FLAG35fff60f3 [2020-10-12 21:10:09,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e36c3cec/f1d703486ecf4998995b3eb14197fd2a [2020-10-12 21:10:09,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:10:09,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:10:09,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:10:09,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:10:09,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:10:09,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530cd126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09, skipping insertion in model container [2020-10-12 21:10:09,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:10:09,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:10:09,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:10:09,565 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:10:09,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:10:09,713 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:10:09,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09 WrapperNode [2020-10-12 21:10:09,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:10:09,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:10:09,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:10:09,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:10:09,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... [2020-10-12 21:10:09,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:10:09,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:10:09,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:10:09,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:10:09,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:10:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:10:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:10:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-12 21:10:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure write_loop [2020-10-12 21:10:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure compute1 [2020-10-12 21:10:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure compute2 [2020-10-12 21:10:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure write_back [2020-10-12 21:10:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure read [2020-10-12 21:10:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-12 21:10:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-12 21:10:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:10:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:10:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:10:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-12 21:10:09,840 INFO L130 BoogieDeclarations]: Found specification of procedure write_loop [2020-10-12 21:10:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure compute1 [2020-10-12 21:10:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure compute2 [2020-10-12 21:10:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure write_back [2020-10-12 21:10:09,841 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 21:10:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-12 21:10:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-12 21:10:09,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:10:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:10:09,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:10:10,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:10:10,468 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-12 21:10:10,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:10:10 BoogieIcfgContainer [2020-10-12 21:10:10,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:10:10,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:10:10,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:10:10,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:10:10,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:10:09" (1/3) ... [2020-10-12 21:10:10,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526d6fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:10, skipping insertion in model container [2020-10-12 21:10:10,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:10:09" (2/3) ... [2020-10-12 21:10:10,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526d6fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:10:10, skipping insertion in model container [2020-10-12 21:10:10,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:10:10" (3/3) ... [2020-10-12 21:10:10,484 INFO L109 eAbstractionObserver]: Analyzing ICFG toy.cil.c [2020-10-12 21:10:10,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:10:10,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:10:10,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:10:10,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:10:10,546 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:10:10,546 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:10:10,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:10:10,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:10:10,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:10:10,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:10:10,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:10:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-12 21:10:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 21:10:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:10,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:10:10,586 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:10,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:10,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2004131150, now seen corresponding path program 1 times [2020-10-12 21:10:10,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:10,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861395861] [2020-10-12 21:10:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:10,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:11,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:13,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:14,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:14,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 21:10:14,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:10:14,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3881 [2020-10-12 21:10:14,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:10:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:10:14,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 21:10:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:10:15,020 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 21:10:15,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:15,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:10:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:15,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:10:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:10:15,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861395861] [2020-10-12 21:10:15,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:15,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 21:10:15,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122636101] [2020-10-12 21:10:15,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 21:10:15,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:15,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 21:10:15,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 21:10:15,133 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-10-12 21:10:15,302 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 21:10:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:16,241 INFO L93 Difference]: Finished difference Result 441 states and 766 transitions. [2020-10-12 21:10:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 21:10:16,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-12 21:10:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:16,260 INFO L225 Difference]: With dead ends: 441 [2020-10-12 21:10:16,260 INFO L226 Difference]: Without dead ends: 290 [2020-10-12 21:10:16,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:10:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-12 21:10:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 257. [2020-10-12 21:10:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-12 21:10:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 414 transitions. [2020-10-12 21:10:16,346 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 414 transitions. Word has length 47 [2020-10-12 21:10:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:16,347 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 414 transitions. [2020-10-12 21:10:16,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 21:10:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 414 transitions. [2020-10-12 21:10:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:10:16,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:16,352 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:10:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:10:16,353 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1448756850, now seen corresponding path program 1 times [2020-10-12 21:10:16,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:16,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434948380] [2020-10-12 21:10:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:16,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:19,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:20,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:20,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:20,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:21,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:21,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:10:21,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:10:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 21:10:21,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:10:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 21:10:21,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:10:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:10:21,561 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 21:10:21,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:21,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:21,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:21,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:21,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:10:21,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:21,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:21,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:21,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:21,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:21,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:21,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:21,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:21,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:21,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:10:21,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:10:21,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:10:21,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:10:21,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434948380] [2020-10-12 21:10:21,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:21,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:10:21,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388985525] [2020-10-12 21:10:21,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:10:21,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:10:21,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:10:21,695 INFO L87 Difference]: Start difference. First operand 257 states and 414 transitions. Second operand 6 states. [2020-10-12 21:10:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:22,750 INFO L93 Difference]: Finished difference Result 826 states and 1369 transitions. [2020-10-12 21:10:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 21:10:22,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:10:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:22,759 INFO L225 Difference]: With dead ends: 826 [2020-10-12 21:10:22,759 INFO L226 Difference]: Without dead ends: 604 [2020-10-12 21:10:22,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:10:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-10-12 21:10:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 459. [2020-10-12 21:10:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-12 21:10:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 750 transitions. [2020-10-12 21:10:22,825 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 750 transitions. Word has length 61 [2020-10-12 21:10:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:22,825 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 750 transitions. [2020-10-12 21:10:22,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:10:22,825 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 750 transitions. [2020-10-12 21:10:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:10:22,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:22,831 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:10:22,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:10:22,832 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:22,832 INFO L82 PathProgramCache]: Analyzing trace with hash 967676592, now seen corresponding path program 1 times [2020-10-12 21:10:22,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:22,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75398551] [2020-10-12 21:10:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:22,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:22,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:23,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:23,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:25,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:27,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:27,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:10:27,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:10:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:10:27,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:10:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 21:10:27,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 21:10:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:10:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:27,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:27,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:27,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:27,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:10:27,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:10:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:10:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:10:28,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75398551] [2020-10-12 21:10:28,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:28,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:10:28,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332516388] [2020-10-12 21:10:28,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:10:28,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:28,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:10:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:10:28,038 INFO L87 Difference]: Start difference. First operand 459 states and 750 transitions. Second operand 6 states. [2020-10-12 21:10:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:29,542 INFO L93 Difference]: Finished difference Result 1548 states and 2625 transitions. [2020-10-12 21:10:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 21:10:29,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:10:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:29,565 INFO L225 Difference]: With dead ends: 1548 [2020-10-12 21:10:29,565 INFO L226 Difference]: Without dead ends: 1145 [2020-10-12 21:10:29,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-10-12 21:10:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-10-12 21:10:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 873. [2020-10-12 21:10:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 873 states. [2020-10-12 21:10:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1466 transitions. [2020-10-12 21:10:29,703 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1466 transitions. Word has length 61 [2020-10-12 21:10:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:29,705 INFO L479 AbstractCegarLoop]: Abstraction has 873 states and 1466 transitions. [2020-10-12 21:10:29,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:10:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1466 transitions. [2020-10-12 21:10:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:10:29,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:29,719 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:10:29,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:10:29,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1060909518, now seen corresponding path program 1 times [2020-10-12 21:10:29,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:29,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888006064] [2020-10-12 21:10:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:29,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:29,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:29,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:29,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:10:34,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:10:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 21:10:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:10:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 21:10:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:34,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:34,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:10:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:34,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:34,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:34,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:34,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:10:34,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:10:34,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:34,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 21:10:34,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888006064] [2020-10-12 21:10:34,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:34,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:10:34,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636005885] [2020-10-12 21:10:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:10:34,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:34,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:10:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:10:34,911 INFO L87 Difference]: Start difference. First operand 873 states and 1466 transitions. Second operand 5 states. [2020-10-12 21:10:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:35,959 INFO L93 Difference]: Finished difference Result 2080 states and 3515 transitions. [2020-10-12 21:10:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 21:10:35,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-12 21:10:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:35,971 INFO L225 Difference]: With dead ends: 2080 [2020-10-12 21:10:35,971 INFO L226 Difference]: Without dead ends: 1282 [2020-10-12 21:10:35,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:10:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2020-10-12 21:10:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1005. [2020-10-12 21:10:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2020-10-12 21:10:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1696 transitions. [2020-10-12 21:10:36,077 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1696 transitions. Word has length 61 [2020-10-12 21:10:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:36,078 INFO L479 AbstractCegarLoop]: Abstraction has 1005 states and 1696 transitions. [2020-10-12 21:10:36,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:10:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1696 transitions. [2020-10-12 21:10:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 21:10:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:36,082 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 21:10:36,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:10:36,083 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 990074480, now seen corresponding path program 1 times [2020-10-12 21:10:36,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:36,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552179864] [2020-10-12 21:10:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:36,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:41,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:41,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 21:10:41,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 21:10:41,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:10:41,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:41,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 21:10:41,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 21:10:41,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:41,270 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-12 21:10:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:41,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:41,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:41,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:10:41,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:41,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:41,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:10:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:10:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 21:10:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:10:41,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552179864] [2020-10-12 21:10:41,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:10:41,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 21:10:41,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842696985] [2020-10-12 21:10:41,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:10:41,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:41,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:10:41,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:10:41,341 INFO L87 Difference]: Start difference. First operand 1005 states and 1696 transitions. Second operand 6 states. [2020-10-12 21:10:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:42,901 INFO L93 Difference]: Finished difference Result 2837 states and 5105 transitions. [2020-10-12 21:10:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:10:42,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 21:10:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:42,919 INFO L225 Difference]: With dead ends: 2837 [2020-10-12 21:10:42,919 INFO L226 Difference]: Without dead ends: 2364 [2020-10-12 21:10:42,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:10:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2020-10-12 21:10:43,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 1431. [2020-10-12 21:10:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-10-12 21:10:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2472 transitions. [2020-10-12 21:10:43,135 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2472 transitions. Word has length 61 [2020-10-12 21:10:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:43,138 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 2472 transitions. [2020-10-12 21:10:43,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:10:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2472 transitions. [2020-10-12 21:10:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 21:10:43,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:43,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:10:43,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 21:10:43,149 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:43,150 INFO L82 PathProgramCache]: Analyzing trace with hash -606141674, now seen corresponding path program 1 times [2020-10-12 21:10:43,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:43,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765053685] [2020-10-12 21:10:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:48,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:48,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 21:10:48,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:10:48,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 21:10:48,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:48,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 21:10:48,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 21:10:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:48,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:48,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:48,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:48,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:48,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:10:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:10:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:48,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:10:48,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 21:10:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:48,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:10:48,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:48,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:10:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:48,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:10:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:10:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 21:10:48,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765053685] [2020-10-12 21:10:48,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:48,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:10:48,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38567050] [2020-10-12 21:10:48,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:10:48,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:10:48,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:10:48,333 INFO L87 Difference]: Start difference. First operand 1431 states and 2472 transitions. Second operand 5 states. [2020-10-12 21:10:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:49,899 INFO L93 Difference]: Finished difference Result 4476 states and 7865 transitions. [2020-10-12 21:10:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:10:49,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 21:10:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:49,924 INFO L225 Difference]: With dead ends: 4476 [2020-10-12 21:10:49,924 INFO L226 Difference]: Without dead ends: 3204 [2020-10-12 21:10:49,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:10:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-10-12 21:10:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2511. [2020-10-12 21:10:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-10-12 21:10:50,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4336 transitions. [2020-10-12 21:10:50,187 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4336 transitions. Word has length 81 [2020-10-12 21:10:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:50,187 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4336 transitions. [2020-10-12 21:10:50,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:10:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4336 transitions. [2020-10-12 21:10:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 21:10:50,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:50,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:10:50,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 21:10:50,206 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:50,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:50,206 INFO L82 PathProgramCache]: Analyzing trace with hash -93302423, now seen corresponding path program 1 times [2020-10-12 21:10:50,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:50,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240741826] [2020-10-12 21:10:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:50,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4528 [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:10:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:10:54,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 21:10:54,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:10:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:54,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:10:54,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:54,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:10:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:10:54,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:54,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:10:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:54,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:54,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:10:54,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:10:54,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:10:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:10:54,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 21:10:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:54,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:54,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:54,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:10:54,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:54,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:10:54,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:54,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 21:10:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:10:54,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:10:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:54,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:10:54,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:10:54,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:10:54,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:10:54,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:10:54,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:10:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:10:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:10:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:10:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:10:54,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240741826] [2020-10-12 21:10:54,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:10:54,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:10:54,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865951551] [2020-10-12 21:10:54,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:10:54,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:10:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:10:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:10:54,940 INFO L87 Difference]: Start difference. First operand 2511 states and 4336 transitions. Second operand 6 states. [2020-10-12 21:10:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:10:56,191 INFO L93 Difference]: Finished difference Result 6853 states and 11920 transitions. [2020-10-12 21:10:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:10:56,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-12 21:10:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:10:56,222 INFO L225 Difference]: With dead ends: 6853 [2020-10-12 21:10:56,222 INFO L226 Difference]: Without dead ends: 4413 [2020-10-12 21:10:56,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:10:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2020-10-12 21:10:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 2978. [2020-10-12 21:10:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2978 states. [2020-10-12 21:10:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 5189 transitions. [2020-10-12 21:10:56,500 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 5189 transitions. Word has length 89 [2020-10-12 21:10:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:10:56,501 INFO L479 AbstractCegarLoop]: Abstraction has 2978 states and 5189 transitions. [2020-10-12 21:10:56,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:10:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 5189 transitions. [2020-10-12 21:10:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 21:10:56,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:10:56,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:10:56,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 21:10:56,526 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:10:56,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:10:56,527 INFO L82 PathProgramCache]: Analyzing trace with hash -16401625, now seen corresponding path program 1 times [2020-10-12 21:10:56,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:10:56,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854871784] [2020-10-12 21:10:56,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:10:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:10:56,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:57,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:10:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4518 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 21:11:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:01,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:01,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:01,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:01,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:11:01,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:01,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:01,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:01,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 21:11:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:01,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:01,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:11:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:01,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:01,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:11:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:01,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:01,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:01,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:01,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:01,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:01,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:01,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:11:01,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854871784] [2020-10-12 21:11:01,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:01,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:01,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83820707] [2020-10-12 21:11:01,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:01,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:01,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:01,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:01,235 INFO L87 Difference]: Start difference. First operand 2978 states and 5189 transitions. Second operand 6 states. [2020-10-12 21:11:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:02,471 INFO L93 Difference]: Finished difference Result 7389 states and 12888 transitions. [2020-10-12 21:11:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 21:11:02,475 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-12 21:11:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:02,505 INFO L225 Difference]: With dead ends: 7389 [2020-10-12 21:11:02,506 INFO L226 Difference]: Without dead ends: 4731 [2020-10-12 21:11:02,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:11:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2020-10-12 21:11:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 3296. [2020-10-12 21:11:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2020-10-12 21:11:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 5703 transitions. [2020-10-12 21:11:02,809 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 5703 transitions. Word has length 89 [2020-10-12 21:11:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:02,810 INFO L479 AbstractCegarLoop]: Abstraction has 3296 states and 5703 transitions. [2020-10-12 21:11:02,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 5703 transitions. [2020-10-12 21:11:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 21:11:02,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:02,830 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:11:02,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 21:11:02,830 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:02,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1998223510, now seen corresponding path program 1 times [2020-10-12 21:11:02,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:02,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647514351] [2020-10-12 21:11:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:02,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:03,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:07,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:07,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4894 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:11:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:07,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:07,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:07,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:07,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:07,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:07,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:07,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:07,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:07,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:07,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:07,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:07,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:07,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:07,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 21:11:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:07,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:07,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:07,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:07,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:07,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:07,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:07,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:11:07,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647514351] [2020-10-12 21:11:07,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:07,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:11:07,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054415433] [2020-10-12 21:11:07,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:11:07,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:11:07,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:11:07,875 INFO L87 Difference]: Start difference. First operand 3296 states and 5703 transitions. Second operand 5 states. [2020-10-12 21:11:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:08,799 INFO L93 Difference]: Finished difference Result 7357 states and 12690 transitions. [2020-10-12 21:11:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:11:08,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-12 21:11:08,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:08,824 INFO L225 Difference]: With dead ends: 7357 [2020-10-12 21:11:08,824 INFO L226 Difference]: Without dead ends: 4161 [2020-10-12 21:11:08,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:11:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2020-10-12 21:11:09,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 3296. [2020-10-12 21:11:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3296 states. [2020-10-12 21:11:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 5583 transitions. [2020-10-12 21:11:09,189 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 5583 transitions. Word has length 81 [2020-10-12 21:11:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:09,190 INFO L479 AbstractCegarLoop]: Abstraction has 3296 states and 5583 transitions. [2020-10-12 21:11:09,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:11:09,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 5583 transitions. [2020-10-12 21:11:09,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 21:11:09,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:09,212 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:11:09,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 21:11:09,213 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:09,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1706442261, now seen corresponding path program 1 times [2020-10-12 21:11:09,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:09,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653051764] [2020-10-12 21:11:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:09,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:12,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:12,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 21:11:12,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 21:11:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3479 [2020-10-12 21:11:12,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:12,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:12,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:11:12,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:11:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:12,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:12,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:12,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:12,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:12,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:12,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:12,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:12,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:12,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:12,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:12,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:12,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:12,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:12,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:12,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:12,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:12,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 21:11:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:12,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:11:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:12,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 21:11:12,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:12,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:11:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:12,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:11:12,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653051764] [2020-10-12 21:11:12,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:12,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:12,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20033758] [2020-10-12 21:11:12,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:12,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:12,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:12,875 INFO L87 Difference]: Start difference. First operand 3296 states and 5583 transitions. Second operand 6 states. [2020-10-12 21:11:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:13,970 INFO L93 Difference]: Finished difference Result 7641 states and 13033 transitions. [2020-10-12 21:11:13,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 21:11:13,971 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-12 21:11:13,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:13,993 INFO L225 Difference]: With dead ends: 7641 [2020-10-12 21:11:13,993 INFO L226 Difference]: Without dead ends: 4397 [2020-10-12 21:11:14,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:11:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2020-10-12 21:11:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 2962. [2020-10-12 21:11:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2020-10-12 21:11:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 4892 transitions. [2020-10-12 21:11:14,265 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 4892 transitions. Word has length 89 [2020-10-12 21:11:14,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:14,265 INFO L479 AbstractCegarLoop]: Abstraction has 2962 states and 4892 transitions. [2020-10-12 21:11:14,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 4892 transitions. [2020-10-12 21:11:14,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 21:11:14,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:14,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:11:14,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 21:11:14,283 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:14,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:14,283 INFO L82 PathProgramCache]: Analyzing trace with hash 27662189, now seen corresponding path program 1 times [2020-10-12 21:11:14,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:14,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961557949] [2020-10-12 21:11:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:14,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:16,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:16,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2212 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 21:11:16,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:16,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:16,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:16,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:16,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:16,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:16,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:11:16,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 21:11:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:16,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:16,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:11:16,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:16,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:16,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:16,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:11:16,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:16,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:11:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:16,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:16,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 21:11:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:16,650 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:11:16,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961557949] [2020-10-12 21:11:16,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:16,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:16,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278280765] [2020-10-12 21:11:16,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:16,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:16,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:16,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:16,652 INFO L87 Difference]: Start difference. First operand 2962 states and 4892 transitions. Second operand 6 states. [2020-10-12 21:11:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:18,370 INFO L93 Difference]: Finished difference Result 10243 states and 17691 transitions. [2020-10-12 21:11:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 21:11:18,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-12 21:11:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:18,402 INFO L225 Difference]: With dead ends: 10243 [2020-10-12 21:11:18,402 INFO L226 Difference]: Without dead ends: 7833 [2020-10-12 21:11:18,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:11:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2020-10-12 21:11:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 5283. [2020-10-12 21:11:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5283 states. [2020-10-12 21:11:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 8761 transitions. [2020-10-12 21:11:18,914 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 8761 transitions. Word has length 89 [2020-10-12 21:11:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:18,914 INFO L479 AbstractCegarLoop]: Abstraction has 5283 states and 8761 transitions. [2020-10-12 21:11:18,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 8761 transitions. [2020-10-12 21:11:18,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 21:11:18,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:18,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:11:18,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 21:11:18,961 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:18,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:18,961 INFO L82 PathProgramCache]: Analyzing trace with hash 460935644, now seen corresponding path program 1 times [2020-10-12 21:11:18,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:18,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931403725] [2020-10-12 21:11:18,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 21:11:19,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:19,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:19,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:19,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:11:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:19,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:19,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:19,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:19,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:19,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:19,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:19,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 21:11:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:19,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:19,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:19,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:19,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 21:11:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:19,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:19,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:11:19,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931403725] [2020-10-12 21:11:19,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:19,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:19,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426757293] [2020-10-12 21:11:19,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:19,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:19,920 INFO L87 Difference]: Start difference. First operand 5283 states and 8761 transitions. Second operand 6 states. [2020-10-12 21:11:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:22,165 INFO L93 Difference]: Finished difference Result 20383 states and 35497 transitions. [2020-10-12 21:11:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 21:11:22,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-12 21:11:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:22,228 INFO L225 Difference]: With dead ends: 20383 [2020-10-12 21:11:22,228 INFO L226 Difference]: Without dead ends: 15400 [2020-10-12 21:11:22,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:11:22,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15400 states. [2020-10-12 21:11:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15400 to 10213. [2020-10-12 21:11:22,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10213 states. [2020-10-12 21:11:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10213 states to 10213 states and 17795 transitions. [2020-10-12 21:11:23,007 INFO L78 Accepts]: Start accepts. Automaton has 10213 states and 17795 transitions. Word has length 88 [2020-10-12 21:11:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:23,007 INFO L479 AbstractCegarLoop]: Abstraction has 10213 states and 17795 transitions. [2020-10-12 21:11:23,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10213 states and 17795 transitions. [2020-10-12 21:11:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-12 21:11:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:23,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-12 21:11:23,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 21:11:23,085 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -710798929, now seen corresponding path program 1 times [2020-10-12 21:11:23,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:23,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365313521] [2020-10-12 21:11:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 21:11:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:23,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:23,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:23,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:23,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 21:11:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:23,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 21:11:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:23,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 21:11:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:23,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:23,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:23,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:23,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:23,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 21:11:23,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365313521] [2020-10-12 21:11:23,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:23,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:23,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590533918] [2020-10-12 21:11:23,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:23,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:23,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:23,646 INFO L87 Difference]: Start difference. First operand 10213 states and 17795 transitions. Second operand 6 states. [2020-10-12 21:11:23,813 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 21:11:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:25,372 INFO L93 Difference]: Finished difference Result 24487 states and 42864 transitions. [2020-10-12 21:11:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 21:11:25,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-12 21:11:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:25,435 INFO L225 Difference]: With dead ends: 24487 [2020-10-12 21:11:25,435 INFO L226 Difference]: Without dead ends: 14828 [2020-10-12 21:11:25,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 21:11:25,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14828 states. [2020-10-12 21:11:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14828 to 9691. [2020-10-12 21:11:27,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9691 states. [2020-10-12 21:11:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 17081 transitions. [2020-10-12 21:11:27,202 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 17081 transitions. Word has length 89 [2020-10-12 21:11:27,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:27,202 INFO L479 AbstractCegarLoop]: Abstraction has 9691 states and 17081 transitions. [2020-10-12 21:11:27,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:27,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 17081 transitions. [2020-10-12 21:11:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 21:11:27,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:27,217 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 21:11:27,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 21:11:27,217 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:27,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1868611956, now seen corresponding path program 1 times [2020-10-12 21:11:27,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:27,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213052561] [2020-10-12 21:11:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:11:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:11:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:27,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:27,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:27,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:27,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:27,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:27,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:27,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:27,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:27,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:27,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 21:11:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:27,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:27,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:27,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 21:11:27,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213052561] [2020-10-12 21:11:27,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:27,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 21:11:27,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007590570] [2020-10-12 21:11:27,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:11:27,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:11:27,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:11:27,832 INFO L87 Difference]: Start difference. First operand 9691 states and 17081 transitions. Second operand 5 states. [2020-10-12 21:11:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:29,200 INFO L93 Difference]: Finished difference Result 21749 states and 38243 transitions. [2020-10-12 21:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 21:11:29,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-12 21:11:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:29,246 INFO L225 Difference]: With dead ends: 21749 [2020-10-12 21:11:29,246 INFO L226 Difference]: Without dead ends: 12302 [2020-10-12 21:11:29,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:11:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12302 states. [2020-10-12 21:11:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12302 to 9425. [2020-10-12 21:11:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2020-10-12 21:11:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 16707 transitions. [2020-10-12 21:11:30,169 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 16707 transitions. Word has length 83 [2020-10-12 21:11:30,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:30,170 INFO L479 AbstractCegarLoop]: Abstraction has 9425 states and 16707 transitions. [2020-10-12 21:11:30,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:11:30,170 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 16707 transitions. [2020-10-12 21:11:30,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 21:11:30,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:30,176 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-12 21:11:30,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 21:11:30,177 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:30,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:30,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1811659478, now seen corresponding path program 1 times [2020-10-12 21:11:30,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:30,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144255417] [2020-10-12 21:11:30,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 21:11:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:30,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:30,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:30,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:30,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 21:11:30,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 21:11:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:30,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:30,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:30,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 21:11:30,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144255417] [2020-10-12 21:11:30,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:11:30,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 21:11:30,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395342175] [2020-10-12 21:11:30,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 21:11:30,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:30,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 21:11:30,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 21:11:30,582 INFO L87 Difference]: Start difference. First operand 9425 states and 16707 transitions. Second operand 5 states. [2020-10-12 21:11:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:33,115 INFO L93 Difference]: Finished difference Result 31671 states and 56814 transitions. [2020-10-12 21:11:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 21:11:33,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-12 21:11:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:33,173 INFO L225 Difference]: With dead ends: 31671 [2020-10-12 21:11:33,173 INFO L226 Difference]: Without dead ends: 18304 [2020-10-12 21:11:33,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 21:11:33,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2020-10-12 21:11:34,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 14107. [2020-10-12 21:11:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14107 states. [2020-10-12 21:11:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14107 states to 14107 states and 25001 transitions. [2020-10-12 21:11:34,618 INFO L78 Accepts]: Start accepts. Automaton has 14107 states and 25001 transitions. Word has length 85 [2020-10-12 21:11:34,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:34,618 INFO L479 AbstractCegarLoop]: Abstraction has 14107 states and 25001 transitions. [2020-10-12 21:11:34,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 21:11:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 14107 states and 25001 transitions. [2020-10-12 21:11:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-12 21:11:34,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:34,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 1] [2020-10-12 21:11:34,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 21:11:34,631 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:34,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1313452937, now seen corresponding path program 1 times [2020-10-12 21:11:34,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:34,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635180749] [2020-10-12 21:11:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:34,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:34,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 722 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 21:11:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 21:11:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:11:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 21:11:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 21:11:35,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 21:11:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:35,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:35,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 21:11:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:35,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 21:11:35,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:35,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 21:11:35,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635180749] [2020-10-12 21:11:35,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:11:35,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 21:11:35,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979601095] [2020-10-12 21:11:35,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 21:11:35,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:35,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 21:11:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 21:11:35,513 INFO L87 Difference]: Start difference. First operand 14107 states and 25001 transitions. Second operand 6 states. [2020-10-12 21:11:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:38,152 INFO L93 Difference]: Finished difference Result 32471 states and 57746 transitions. [2020-10-12 21:11:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 21:11:38,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-12 21:11:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:38,250 INFO L225 Difference]: With dead ends: 32471 [2020-10-12 21:11:38,250 INFO L226 Difference]: Without dead ends: 18644 [2020-10-12 21:11:38,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:11:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18644 states. [2020-10-12 21:11:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18644 to 13808. [2020-10-12 21:11:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13808 states. [2020-10-12 21:11:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13808 states to 13808 states and 23109 transitions. [2020-10-12 21:11:39,389 INFO L78 Accepts]: Start accepts. Automaton has 13808 states and 23109 transitions. Word has length 102 [2020-10-12 21:11:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:39,389 INFO L479 AbstractCegarLoop]: Abstraction has 13808 states and 23109 transitions. [2020-10-12 21:11:39,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 21:11:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13808 states and 23109 transitions. [2020-10-12 21:11:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 21:11:39,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:39,434 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:11:39,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 21:11:39,435 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:39,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1781811853, now seen corresponding path program 1 times [2020-10-12 21:11:39,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:39,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721449314] [2020-10-12 21:11:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:39,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:39,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:39,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:42,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-12 21:11:44,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:11:44,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 21:11:44,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 21:11:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:11:44,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 21:11:44,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:11:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 21:11:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 21:11:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 21:11:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:11:44,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:11:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 21:11:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:11:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:44,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:44,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:11:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 21:11:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:44,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:11:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:44,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:11:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:11:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:44,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:11:44,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:11:44,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:11:44,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 21:11:44,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-12 21:11:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:44,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:44,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:44,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:44,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 21:11:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:44,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:44,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:44,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:11:44,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:44,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 21:11:44,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721449314] [2020-10-12 21:11:44,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:11:44,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 21:11:44,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874078867] [2020-10-12 21:11:44,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:11:44,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:44,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:11:44,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:11:44,835 INFO L87 Difference]: Start difference. First operand 13808 states and 23109 transitions. Second operand 11 states. [2020-10-12 21:11:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:11:50,965 INFO L93 Difference]: Finished difference Result 63319 states and 105869 transitions. [2020-10-12 21:11:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 21:11:50,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 146 [2020-10-12 21:11:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:11:51,151 INFO L225 Difference]: With dead ends: 63319 [2020-10-12 21:11:51,151 INFO L226 Difference]: Without dead ends: 49553 [2020-10-12 21:11:51,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 21:11:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49553 states. [2020-10-12 21:11:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49553 to 32250. [2020-10-12 21:11:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32250 states. [2020-10-12 21:11:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32250 states to 32250 states and 54235 transitions. [2020-10-12 21:11:53,718 INFO L78 Accepts]: Start accepts. Automaton has 32250 states and 54235 transitions. Word has length 146 [2020-10-12 21:11:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:11:53,718 INFO L479 AbstractCegarLoop]: Abstraction has 32250 states and 54235 transitions. [2020-10-12 21:11:53,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:11:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 32250 states and 54235 transitions. [2020-10-12 21:11:53,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-12 21:11:53,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:11:53,844 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:11:53,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 21:11:53,845 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:11:53,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:11:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1147170332, now seen corresponding path program 1 times [2020-10-12 21:11:53,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:11:53,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584935708] [2020-10-12 21:11:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:11:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:53,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:53,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:53,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:53,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:54,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:58,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 21:11:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 21:11:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 21:11:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 21:11:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:11:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 21:11:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:11:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:58,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:58,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:58,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:11:58,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:58,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:11:58,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:58,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:11:58,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:58,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 21:11:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 21:11:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 21:11:59,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 21:11:59,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 21:11:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:11:59,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 21:11:59,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:11:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:11:59,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:11:59,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 21:11:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 21:11:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 21:11:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:11:59,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 21:11:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:11:59,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:59,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 21:11:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:11:59,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 21:11:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 21:11:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:11:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:11:59,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:11:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 21:11:59,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:11:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:11:59,262 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 21:11:59,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584935708] [2020-10-12 21:11:59,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:11:59,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:11:59,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848012267] [2020-10-12 21:11:59,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:11:59,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:11:59,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:11:59,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:11:59,264 INFO L87 Difference]: Start difference. First operand 32250 states and 54235 transitions. Second operand 14 states. [2020-10-12 21:11:59,458 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-12 21:12:01,952 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-12 21:12:04,494 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-12 21:12:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:12:19,162 INFO L93 Difference]: Finished difference Result 215937 states and 382645 transitions. [2020-10-12 21:12:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-12 21:12:19,163 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 148 [2020-10-12 21:12:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:12:20,131 INFO L225 Difference]: With dead ends: 215937 [2020-10-12 21:12:20,131 INFO L226 Difference]: Without dead ends: 189136 [2020-10-12 21:12:20,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2239 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1227, Invalid=4935, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 21:12:20,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189136 states. [2020-10-12 21:12:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189136 to 135370. [2020-10-12 21:12:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135370 states. [2020-10-12 21:12:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135370 states to 135370 states and 243952 transitions. [2020-10-12 21:12:38,029 INFO L78 Accepts]: Start accepts. Automaton has 135370 states and 243952 transitions. Word has length 148 [2020-10-12 21:12:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:12:38,030 INFO L479 AbstractCegarLoop]: Abstraction has 135370 states and 243952 transitions. [2020-10-12 21:12:38,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:12:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 135370 states and 243952 transitions. [2020-10-12 21:12:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-12 21:12:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:12:38,630 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] [2020-10-12 21:12:38,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 21:12:38,630 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:12:38,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:12:38,630 INFO L82 PathProgramCache]: Analyzing trace with hash 583752023, now seen corresponding path program 1 times [2020-10-12 21:12:38,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:12:38,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558050561] [2020-10-12 21:12:38,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:12:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:39,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6851 [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:12:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 21:12:45,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 21:12:45,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:12:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:12:45,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:12:45,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:12:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:12:45,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:12:45,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 21:12:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 21:12:45,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:12:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-12 21:12:45,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:12:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:12:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 21:12:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:12:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 21:12:45,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:12:45,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:12:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:12:45,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:12:45,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-12 21:12:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 21:12:45,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:12:45,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 21:12:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 21:12:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 21:12:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 21:12:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:12:45,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:12:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:12:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:12:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:12:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-12 21:12:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:12:45,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 21:12:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:12:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:12:45,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 21:12:45,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:12:45,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:12:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 21:12:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558050561] [2020-10-12 21:12:45,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:12:45,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 21:12:45,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351061020] [2020-10-12 21:12:45,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 21:12:45,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:12:45,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 21:12:45,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-12 21:12:45,934 INFO L87 Difference]: Start difference. First operand 135370 states and 243952 transitions. Second operand 12 states. [2020-10-12 21:13:28,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:13:28,599 INFO L93 Difference]: Finished difference Result 531196 states and 1054292 transitions. [2020-10-12 21:13:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-12 21:13:28,599 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 144 [2020-10-12 21:13:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted.