/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:44:22,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:44:22,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:44:22,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:44:22,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:44:22,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:44:22,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:44:22,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:44:22,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:44:22,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:44:22,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:44:23,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:44:23,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:44:23,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:44:23,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:44:23,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:44:23,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:44:23,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:44:23,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:44:23,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:44:23,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:44:23,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:44:23,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:44:23,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:44:23,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:44:23,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:44:23,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:44:23,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:44:23,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:44:23,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:44:23,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:44:23,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:44:23,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:44:23,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:44:23,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:44:23,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:44:23,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:44:23,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:44:23,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:44:23,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:44:23,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:44:23,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:44:23,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:44:23,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:44:23,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:44:23,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:44:23,093 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:44:23,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:44:23,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:44:23,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:44:23,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:44:23,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:44:23,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:44:23,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:44:23,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:44:23,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:44:23,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:44:23,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:44:23,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:44:23,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:44:23,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:44:23,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:44:23,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:44:23,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:44:23,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:44:23,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:44:23,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:44:23,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:44:23,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:44:23,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:44:23,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:44:23,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:44:23,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:44:23,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87a6e3ba0/c456be85a6c84353b839be3a54f233a3/FLAGa70cf8ae0 [2020-10-13 14:44:24,255 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:44:24,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:44:24,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87a6e3ba0/c456be85a6c84353b839be3a54f233a3/FLAGa70cf8ae0 [2020-10-13 14:44:24,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87a6e3ba0/c456be85a6c84353b839be3a54f233a3 [2020-10-13 14:44:24,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:44:24,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:44:24,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:44:24,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:44:24,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:44:24,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:44:24" (1/1) ... [2020-10-13 14:44:24,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fe863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:24, skipping insertion in model container [2020-10-13 14:44:24,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:44:24" (1/1) ... [2020-10-13 14:44:24,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:44:24,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:44:25,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:44:25,713 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:44:26,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:44:26,182 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:44:26,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26 WrapperNode [2020-10-13 14:44:26,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:44:26,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:44:26,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:44:26,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:44:26,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... [2020-10-13 14:44:26,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:44:26,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:44:26,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:44:26,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:44:26,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:44:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:44:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:44:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:44:26,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:44:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:44:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:44:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:44:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:44:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:44:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:44:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:44:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:44:26,499 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:44:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:44:26,500 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:44:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:44:26,501 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:44:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:44:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:44:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:44:26,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:44:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:44:29,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:44:29,892 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:44:29,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:44:29 BoogieIcfgContainer [2020-10-13 14:44:29,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:44:29,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:44:29,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:44:29,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:44:29,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:44:24" (1/3) ... [2020-10-13 14:44:29,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780cdd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:44:29, skipping insertion in model container [2020-10-13 14:44:29,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:26" (2/3) ... [2020-10-13 14:44:29,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780cdd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:44:29, skipping insertion in model container [2020-10-13 14:44:29,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:44:29" (3/3) ... [2020-10-13 14:44:29,912 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:44:29,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:44:29,930 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-13 14:44:29,944 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-13 14:44:29,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:44:29,972 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:44:29,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:44:29,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:44:29,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:44:29,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:44:29,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:44:29,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:44:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states. [2020-10-13 14:44:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:44:30,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:30,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:44:30,044 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:30,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:30,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1537336237, now seen corresponding path program 1 times [2020-10-13 14:44:30,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:30,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35178986] [2020-10-13 14:44:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:31,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:33,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:34,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:35,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:35,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 14:44:35,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:44:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:44:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:44:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:44:37,660 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:44:37,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:37,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:37,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:37,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:37,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:37,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 14:44:37,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:44:37,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:44:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:44:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:44:37,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35178986] [2020-10-13 14:44:37,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:37,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:44:37,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838291418] [2020-10-13 14:44:37,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:44:37,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:37,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:44:37,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:44:37,811 INFO L87 Difference]: Start difference. First operand 1107 states. Second operand 7 states. [2020-10-13 14:44:39,470 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:44:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:44:53,668 INFO L93 Difference]: Finished difference Result 3187 states and 5673 transitions. [2020-10-13 14:44:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:44:53,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-13 14:44:53,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:44:53,726 INFO L225 Difference]: With dead ends: 3187 [2020-10-13 14:44:53,727 INFO L226 Difference]: Without dead ends: 2097 [2020-10-13 14:44:53,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:44:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2020-10-13 14:44:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1818. [2020-10-13 14:44:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1818 states. [2020-10-13 14:44:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2540 transitions. [2020-10-13 14:44:53,956 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2540 transitions. Word has length 67 [2020-10-13 14:44:53,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:44:53,958 INFO L479 AbstractCegarLoop]: Abstraction has 1818 states and 2540 transitions. [2020-10-13 14:44:53,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:44:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2540 transitions. [2020-10-13 14:44:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:44:53,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:53,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:44:53,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:44:53,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 683504486, now seen corresponding path program 1 times [2020-10-13 14:44:53,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:53,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829756478] [2020-10-13 14:44:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:54,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:59,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:59,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:44:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:44:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:44:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:44:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:44:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:44:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:45:01,159 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:45:01,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:01,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:01,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:01,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:01,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 14:45:01,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:01,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:45:01,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829756478] [2020-10-13 14:45:01,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:01,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:45:01,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115051402] [2020-10-13 14:45:01,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:45:01,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:01,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:45:01,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:45:01,258 INFO L87 Difference]: Start difference. First operand 1818 states and 2540 transitions. Second operand 6 states. [2020-10-13 14:45:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:09,586 INFO L93 Difference]: Finished difference Result 5768 states and 8655 transitions. [2020-10-13 14:45:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:45:09,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 14:45:09,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:09,624 INFO L225 Difference]: With dead ends: 5768 [2020-10-13 14:45:09,624 INFO L226 Difference]: Without dead ends: 4921 [2020-10-13 14:45:09,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:45:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2020-10-13 14:45:09,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 1847. [2020-10-13 14:45:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1847 states. [2020-10-13 14:45:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2568 transitions. [2020-10-13 14:45:09,758 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2568 transitions. Word has length 68 [2020-10-13 14:45:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:09,760 INFO L479 AbstractCegarLoop]: Abstraction has 1847 states and 2568 transitions. [2020-10-13 14:45:09,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:45:09,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2568 transitions. [2020-10-13 14:45:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:45:09,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:09,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:45:09,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:45:09,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:09,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1551769359, now seen corresponding path program 1 times [2020-10-13 14:45:09,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:09,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403753365] [2020-10-13 14:45:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:09,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:11,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:12,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:14,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:14,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:45:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:45:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-13 14:45:14,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:45:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 14:45:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 14:45:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:45:16,746 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:45:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:16,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:16,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:16,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:16,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 14:45:16,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:16,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:16,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:16,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:45:16,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403753365] [2020-10-13 14:45:16,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:16,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:45:16,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853771219] [2020-10-13 14:45:16,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:45:16,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:16,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:45:16,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:45:16,835 INFO L87 Difference]: Start difference. First operand 1847 states and 2568 transitions. Second operand 4 states. [2020-10-13 14:45:18,385 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:45:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:25,289 INFO L93 Difference]: Finished difference Result 3579 states and 5171 transitions. [2020-10-13 14:45:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:45:25,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:45:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:25,303 INFO L225 Difference]: With dead ends: 3579 [2020-10-13 14:45:25,304 INFO L226 Difference]: Without dead ends: 2635 [2020-10-13 14:45:25,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:45:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2020-10-13 14:45:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2627. [2020-10-13 14:45:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2020-10-13 14:45:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3709 transitions. [2020-10-13 14:45:25,423 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3709 transitions. Word has length 68 [2020-10-13 14:45:25,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:25,424 INFO L479 AbstractCegarLoop]: Abstraction has 2627 states and 3709 transitions. [2020-10-13 14:45:25,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:45:25,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3709 transitions. [2020-10-13 14:45:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:45:25,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:25,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:45:25,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:45:25,430 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash 216346558, now seen corresponding path program 1 times [2020-10-13 14:45:25,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:25,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277976111] [2020-10-13 14:45:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:25,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:25,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:26,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:29,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:30,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:30,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:45:30,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:45:30,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:45:30,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:45:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 14:45:30,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:45:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:32,067 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:45:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:32,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:32,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:32,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 14:45:32,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:32,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:32,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:45:32,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277976111] [2020-10-13 14:45:32,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:32,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:45:32,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150250277] [2020-10-13 14:45:32,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:45:32,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:32,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:45:32,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:45:32,203 INFO L87 Difference]: Start difference. First operand 2627 states and 3709 transitions. Second operand 4 states. [2020-10-13 14:45:33,818 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:45:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:41,149 INFO L93 Difference]: Finished difference Result 5317 states and 7757 transitions. [2020-10-13 14:45:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:45:41,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:45:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:41,167 INFO L225 Difference]: With dead ends: 5317 [2020-10-13 14:45:41,167 INFO L226 Difference]: Without dead ends: 3814 [2020-10-13 14:45:41,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:45:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2020-10-13 14:45:41,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 3677. [2020-10-13 14:45:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2020-10-13 14:45:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5275 transitions. [2020-10-13 14:45:41,383 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5275 transitions. Word has length 68 [2020-10-13 14:45:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:41,384 INFO L479 AbstractCegarLoop]: Abstraction has 3677 states and 5275 transitions. [2020-10-13 14:45:41,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:45:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5275 transitions. [2020-10-13 14:45:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:45:41,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:41,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:45:41,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:45:41,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:41,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1688306824, now seen corresponding path program 1 times [2020-10-13 14:45:41,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:41,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766957450] [2020-10-13 14:45:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:41,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:41,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:43,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:44,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:45,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:46,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:46,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:45:46,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:45:46,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 14:45:46,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:45:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:45:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:45:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:48,379 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:45:48,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:48,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:48,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:48,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:48,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 14:45:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:45:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:45:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:45:48,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766957450] [2020-10-13 14:45:48,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:48,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:45:48,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874821298] [2020-10-13 14:45:48,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:45:48,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:45:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:45:48,462 INFO L87 Difference]: Start difference. First operand 3677 states and 5275 transitions. Second operand 7 states. [2020-10-13 14:45:50,456 WARN L193 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:45:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:56,988 INFO L93 Difference]: Finished difference Result 23742 states and 35472 transitions. [2020-10-13 14:45:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:45:56,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:45:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:57,066 INFO L225 Difference]: With dead ends: 23742 [2020-10-13 14:45:57,066 INFO L226 Difference]: Without dead ends: 20476 [2020-10-13 14:45:57,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:45:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20476 states. [2020-10-13 14:45:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20476 to 14698. [2020-10-13 14:45:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14698 states. [2020-10-13 14:45:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14698 states to 14698 states and 21607 transitions. [2020-10-13 14:45:57,918 INFO L78 Accepts]: Start accepts. Automaton has 14698 states and 21607 transitions. Word has length 68 [2020-10-13 14:45:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:57,918 INFO L479 AbstractCegarLoop]: Abstraction has 14698 states and 21607 transitions. [2020-10-13 14:45:57,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:45:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 14698 states and 21607 transitions. [2020-10-13 14:45:57,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:45:57,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:57,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:45:57,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:45:57,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:57,930 INFO L82 PathProgramCache]: Analyzing trace with hash 576106037, now seen corresponding path program 1 times [2020-10-13 14:45:57,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:57,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352666581] [2020-10-13 14:45:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:00,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:02,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:46:02,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:46:02,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:46:02,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:04,627 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:46:04,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:04,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:04,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:04,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:46:04,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:04,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:46:04,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [352666581] [2020-10-13 14:46:04,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:04,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:46:04,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305209247] [2020-10-13 14:46:04,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:46:04,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:04,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:46:04,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:46:04,687 INFO L87 Difference]: Start difference. First operand 14698 states and 21607 transitions. Second operand 7 states. [2020-10-13 14:46:06,252 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:46:15,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:15,496 INFO L93 Difference]: Finished difference Result 74355 states and 111639 transitions. [2020-10-13 14:46:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:46:15,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 14:46:15,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:15,674 INFO L225 Difference]: With dead ends: 74355 [2020-10-13 14:46:15,674 INFO L226 Difference]: Without dead ends: 63205 [2020-10-13 14:46:15,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:46:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63205 states. [2020-10-13 14:46:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63205 to 27467. [2020-10-13 14:46:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27467 states. [2020-10-13 14:46:17,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27467 states to 27467 states and 40637 transitions. [2020-10-13 14:46:17,135 INFO L78 Accepts]: Start accepts. Automaton has 27467 states and 40637 transitions. Word has length 68 [2020-10-13 14:46:17,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:17,136 INFO L479 AbstractCegarLoop]: Abstraction has 27467 states and 40637 transitions. [2020-10-13 14:46:17,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:46:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 27467 states and 40637 transitions. [2020-10-13 14:46:17,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:46:17,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:17,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:46:17,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:46:17,147 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1322724344, now seen corresponding path program 1 times [2020-10-13 14:46:17,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:17,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951040870] [2020-10-13 14:46:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:17,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:18,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:18,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:20,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:46:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:23,822 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:46:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:23,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:46:23,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951040870] [2020-10-13 14:46:23,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:23,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:46:23,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608375363] [2020-10-13 14:46:23,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:46:23,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:23,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:46:23,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:46:23,870 INFO L87 Difference]: Start difference. First operand 27467 states and 40637 transitions. Second operand 4 states. [2020-10-13 14:46:25,432 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:46:32,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:32,068 INFO L93 Difference]: Finished difference Result 72733 states and 107903 transitions. [2020-10-13 14:46:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:46:32,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:46:32,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:32,183 INFO L225 Difference]: With dead ends: 72733 [2020-10-13 14:46:32,184 INFO L226 Difference]: Without dead ends: 46441 [2020-10-13 14:46:32,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:46:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46441 states. [2020-10-13 14:46:34,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46441 to 39085. [2020-10-13 14:46:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39085 states. [2020-10-13 14:46:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39085 states to 39085 states and 57408 transitions. [2020-10-13 14:46:34,201 INFO L78 Accepts]: Start accepts. Automaton has 39085 states and 57408 transitions. Word has length 68 [2020-10-13 14:46:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:34,201 INFO L479 AbstractCegarLoop]: Abstraction has 39085 states and 57408 transitions. [2020-10-13 14:46:34,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:46:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 39085 states and 57408 transitions. [2020-10-13 14:46:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:46:34,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:34,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:46:34,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:46:34,216 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash -912549501, now seen corresponding path program 1 times [2020-10-13 14:46:34,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:34,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861434885] [2020-10-13 14:46:34,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:34,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:35,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:38,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:38,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:39,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:39,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:39,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:46:39,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:46:39,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 14:46:39,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:39,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:46:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 14:46:39,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:46:39,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:40,730 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:46:40,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:40,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:40,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 14:46:40,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:46:40,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:46:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:46:40,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861434885] [2020-10-13 14:46:40,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:40,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:46:40,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807216155] [2020-10-13 14:46:40,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:46:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:46:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:46:40,806 INFO L87 Difference]: Start difference. First operand 39085 states and 57408 transitions. Second operand 4 states. [2020-10-13 14:46:42,338 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 599 [2020-10-13 14:46:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:50,800 INFO L93 Difference]: Finished difference Result 102794 states and 151362 transitions. [2020-10-13 14:46:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:46:50,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-13 14:46:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:50,962 INFO L225 Difference]: With dead ends: 102794 [2020-10-13 14:46:50,963 INFO L226 Difference]: Without dead ends: 67978 [2020-10-13 14:46:51,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:46:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67978 states. [2020-10-13 14:46:54,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67978 to 67574. [2020-10-13 14:46:54,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67574 states. [2020-10-13 14:46:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67574 states to 67574 states and 98244 transitions. [2020-10-13 14:46:54,140 INFO L78 Accepts]: Start accepts. Automaton has 67574 states and 98244 transitions. Word has length 68 [2020-10-13 14:46:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:54,140 INFO L479 AbstractCegarLoop]: Abstraction has 67574 states and 98244 transitions. [2020-10-13 14:46:54,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:46:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 67574 states and 98244 transitions. [2020-10-13 14:46:54,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:46:54,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:54,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:46:54,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:46:54,155 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:54,155 INFO L82 PathProgramCache]: Analyzing trace with hash -969773681, now seen corresponding path program 1 times [2020-10-13 14:46:54,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:54,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576377800] [2020-10-13 14:46:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:54,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:54,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:55,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:56,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:59,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:59,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:46:59,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:46:59,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:46:59,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:46:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:46:59,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:46:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:00,776 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:47:00,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:47:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:47:00,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:47:00,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:47:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:47:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:47:00,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:47:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:47:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:47:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:47:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:47:00,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576377800] [2020-10-13 14:47:00,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:47:00,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:47:00,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284311804] [2020-10-13 14:47:00,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:47:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:47:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:47:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:47:00,840 INFO L87 Difference]: Start difference. First operand 67574 states and 98244 transitions. Second operand 6 states. [2020-10-13 14:47:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:47:16,975 INFO L93 Difference]: Finished difference Result 277044 states and 405211 transitions. [2020-10-13 14:47:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:47:16,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 14:47:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:47:17,374 INFO L225 Difference]: With dead ends: 277044 [2020-10-13 14:47:17,375 INFO L226 Difference]: Without dead ends: 220070 [2020-10-13 14:47:17,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:47:17,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220070 states. [2020-10-13 14:47:24,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220070 to 65475. [2020-10-13 14:47:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65475 states. [2020-10-13 14:47:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65475 states to 65475 states and 95211 transitions. [2020-10-13 14:47:24,807 INFO L78 Accepts]: Start accepts. Automaton has 65475 states and 95211 transitions. Word has length 68 [2020-10-13 14:47:24,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:47:24,807 INFO L479 AbstractCegarLoop]: Abstraction has 65475 states and 95211 transitions. [2020-10-13 14:47:24,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:47:24,807 INFO L276 IsEmpty]: Start isEmpty. Operand 65475 states and 95211 transitions. [2020-10-13 14:47:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 14:47:24,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:47:24,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:47:24,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:47:24,819 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:47:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:47:24,819 INFO L82 PathProgramCache]: Analyzing trace with hash 925816758, now seen corresponding path program 1 times [2020-10-13 14:47:24,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:47:24,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664307557] [2020-10-13 14:47:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:47:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:47:24,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:24,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:24,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:25,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:29,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:47:29,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 14:47:29,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:47:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:47:29,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:47:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:47:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 14:47:29,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:47:29,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:31,537 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 595 [2020-10-13 14:47:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:47:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:47:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:31,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:47:31,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:47:31,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:47:31,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:47:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:47:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:47:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:47:31,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:47:31,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:31,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:47:31,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664307557] [2020-10-13 14:47:31,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:47:31,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:47:31,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477730871] [2020-10-13 14:47:31,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:47:31,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:47:31,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:47:31,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:47:31,587 INFO L87 Difference]: Start difference. First operand 65475 states and 95211 transitions. Second operand 9 states. [2020-10-13 14:47:33,084 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 597