/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/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:37:38,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:37:38,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:37:38,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:37:38,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:37:38,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:37:38,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:37:38,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:37:38,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:37:38,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:37:38,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:37:38,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:37:38,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:37:38,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:37:38,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:37:38,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:37:38,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:37:38,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:37:38,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:37:38,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:37:38,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:37:38,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:37:38,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:37:38,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:37:38,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:37:38,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:37:38,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:37:38,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:37:38,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:37:38,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:37:38,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:37:38,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:37:38,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:37:38,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:37:38,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:37:38,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:37:38,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:37:38,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:37:38,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:37:38,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:37:38,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:37:38,946 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 13:37:38,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:37:38,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:37:38,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:37:38,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:37:38,971 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:37:38,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:37:38,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:37:38,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:37:38,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:37:38,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:37:38,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:37:38,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:37:38,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:37:38,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:37:38,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:37:38,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:37:38,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:37:38,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:37:38,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:37:38,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:37:38,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:37:38,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:37:38,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:37:38,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:37:38,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:37:38,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:37:38,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:37:38,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:37:38,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:37:38,976 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 13:37:39,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:37:39,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:37:39,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:37:39,315 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:37:39,316 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:37:39,317 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:39,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6015ec2/71491c63f7264a23b2d54632e1196a5d/FLAGaca0a998f [2020-10-13 13:37:39,921 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:37:39,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:39,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6015ec2/71491c63f7264a23b2d54632e1196a5d/FLAGaca0a998f [2020-10-13 13:37:40,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f6015ec2/71491c63f7264a23b2d54632e1196a5d [2020-10-13 13:37:40,229 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:37:40,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:37:40,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:37:40,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:37:40,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:37:40,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40, skipping insertion in model container [2020-10-13 13:37:40,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:37:40,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:37:40,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:37:40,675 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:37:40,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:37:40,922 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:37:40,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40 WrapperNode [2020-10-13 13:37:40,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:37:40,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:37:40,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:37:40,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:37:40,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (1/1) ... [2020-10-13 13:37:40,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:37:41,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:37:41,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:37:41,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:37:41,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (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 13:37:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:37:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:37:41,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:37:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:37:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:37:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:37:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:37:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:37:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:37:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:37:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:37:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:37:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:37:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:37:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:37:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:37:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:37:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:37:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:37:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:37:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:37:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:37:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:37:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:37:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:37:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:37:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:37:42,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:37:42,002 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:37:42,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:37:42 BoogieIcfgContainer [2020-10-13 13:37:42,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:37:42,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:37:42,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:37:42,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:37:42,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:37:40" (1/3) ... [2020-10-13 13:37:42,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c00240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:37:42, skipping insertion in model container [2020-10-13 13:37:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:37:40" (2/3) ... [2020-10-13 13:37:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c00240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:37:42, skipping insertion in model container [2020-10-13 13:37:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:37:42" (3/3) ... [2020-10-13 13:37:42,017 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3_overflow.ufo.UNBOUNDED.pals.c [2020-10-13 13:37:42,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:37:42,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:37:42,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:37:42,079 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:37:42,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:37:42,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:37:42,080 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:37:42,080 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:37:42,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:37:42,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:37:42,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:37:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-10-13 13:37:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:37:42,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:42,118 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] [2020-10-13 13:37:42,118 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash 440389987, now seen corresponding path program 1 times [2020-10-13 13:37:42,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:42,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031077498] [2020-10-13 13:37:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:37:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-13 13:37:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 13:37:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:42,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:37:43,191 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:43,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:43,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:37:43,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:43,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:43,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:37:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:37:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:43,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:37:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:43,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:43,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:37:43,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:37:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:43,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:37:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:43,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:37:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:37:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:37:43,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:43,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:37:43,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:37:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:43,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 13:37:43,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:43,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:43,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:43,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:43,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:43,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:43,623 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 13:37:43,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031077498] [2020-10-13 13:37:43,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:43,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 13:37:43,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000490964] [2020-10-13 13:37:43,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:37:43,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:37:43,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:37:43,653 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 6 states. [2020-10-13 13:37:44,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:44,935 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2020-10-13 13:37:44,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:37:44,937 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-13 13:37:44,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:44,951 INFO L225 Difference]: With dead ends: 287 [2020-10-13 13:37:44,951 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 13:37:44,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 13:37:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2020-10-13 13:37:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 13:37:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 270 transitions. [2020-10-13 13:37:45,020 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 270 transitions. Word has length 65 [2020-10-13 13:37:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:45,021 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 270 transitions. [2020-10-13 13:37:45,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:37:45,021 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 270 transitions. [2020-10-13 13:37:45,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 13:37:45,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:45,025 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] [2020-10-13 13:37:45,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:37:45,026 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash -588969311, now seen corresponding path program 1 times [2020-10-13 13:37:45,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:45,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087605210] [2020-10-13 13:37:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-13 13:37:45,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-10-13 13:37:45,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:37:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:37:45,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:37:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:45,885 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:45,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:45,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:37:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:45,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:45,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:37:46,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 13:37:46,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:37:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:37:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:37:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:37:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 13:37:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:46,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:46,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:37:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:46,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:46,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:37:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:46,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:37:46,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:46,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:46,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:46,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:37:46,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:46,309 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 13:37:46,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087605210] [2020-10-13 13:37:46,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:46,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:37:46,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460974129] [2020-10-13 13:37:46,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:37:46,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:46,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:37:46,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:37:46,313 INFO L87 Difference]: Start difference. First operand 168 states and 270 transitions. Second operand 12 states. [2020-10-13 13:37:46,805 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:47,034 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-13 13:37:47,304 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:37:47,501 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:37:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:49,202 INFO L93 Difference]: Finished difference Result 285 states and 451 transitions. [2020-10-13 13:37:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:37:49,203 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-10-13 13:37:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:49,208 INFO L225 Difference]: With dead ends: 285 [2020-10-13 13:37:49,208 INFO L226 Difference]: Without dead ends: 183 [2020-10-13 13:37:49,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-13 13:37:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2020-10-13 13:37:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-13 13:37:49,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 240 transitions. [2020-10-13 13:37:49,259 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 240 transitions. Word has length 65 [2020-10-13 13:37:49,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:49,260 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 240 transitions. [2020-10-13 13:37:49,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:37:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 240 transitions. [2020-10-13 13:37:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 13:37:49,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:49,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:49,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:37:49,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:49,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:49,265 INFO L82 PathProgramCache]: Analyzing trace with hash -732684485, now seen corresponding path program 1 times [2020-10-13 13:37:49,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:49,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829533339] [2020-10-13 13:37:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:49,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:37:54,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:37:54,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:37:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:37:54,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:37:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:54,517 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:37:54,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:37:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:37:54,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:37:54,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:54,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:37:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:37:54,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:37:54,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:54,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:37:54,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:37:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:37:54,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:54,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:37:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:37:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:37:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:37:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:54,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:37:54,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:37:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:37:54,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:37:54,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:37:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:37:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:37:54,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 13:37:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:37:54,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:37:54,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:37:54,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:54,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:37:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:54,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:37:54,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:37:54,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:37:54,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:37:54,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:37:54,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:37:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:37:54,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:37:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:37:54,886 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 13:37:54,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829533339] [2020-10-13 13:37:54,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:37:54,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:37:54,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634651661] [2020-10-13 13:37:54,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:37:54,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:37:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:37:54,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:37:54,891 INFO L87 Difference]: Start difference. First operand 168 states and 240 transitions. Second operand 9 states. [2020-10-13 13:37:55,145 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:37:57,159 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:37:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:37:57,627 INFO L93 Difference]: Finished difference Result 391 states and 588 transitions. [2020-10-13 13:37:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:37:57,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-13 13:37:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:37:57,640 INFO L225 Difference]: With dead ends: 391 [2020-10-13 13:37:57,641 INFO L226 Difference]: Without dead ends: 295 [2020-10-13 13:37:57,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:37:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-13 13:37:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 257. [2020-10-13 13:37:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-13 13:37:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 372 transitions. [2020-10-13 13:37:57,716 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 372 transitions. Word has length 94 [2020-10-13 13:37:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:37:57,719 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 372 transitions. [2020-10-13 13:37:57,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:37:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 372 transitions. [2020-10-13 13:37:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 13:37:57,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:37:57,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:37:57,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:37:57,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:37:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:37:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1947106064, now seen corresponding path program 1 times [2020-10-13 13:37:57,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:37:57,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344183097] [2020-10-13 13:37:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:37:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:37:57,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:58,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:37:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:02,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:02,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:38:02,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:38:02,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:38:02,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:02,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:38:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:38:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:38:03,019 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:03,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:38:03,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:03,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:38:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:03,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:03,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:03,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:03,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:38:03,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:03,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 13:38:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:03,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:03,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:03,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:03,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:38:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:03,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:03,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:03,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:03,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:03,359 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 13:38:03,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344183097] [2020-10-13 13:38:03,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:03,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:03,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101383325] [2020-10-13 13:38:03,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:03,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:03,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:03,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:03,363 INFO L87 Difference]: Start difference. First operand 257 states and 372 transitions. Second operand 9 states. [2020-10-13 13:38:03,563 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:05,741 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:38:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:05,960 INFO L93 Difference]: Finished difference Result 681 states and 1018 transitions. [2020-10-13 13:38:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:38:05,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-13 13:38:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:05,966 INFO L225 Difference]: With dead ends: 681 [2020-10-13 13:38:05,966 INFO L226 Difference]: Without dead ends: 496 [2020-10-13 13:38:05,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:38:05,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2020-10-13 13:38:06,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 428. [2020-10-13 13:38:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-10-13 13:38:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 629 transitions. [2020-10-13 13:38:06,014 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 629 transitions. Word has length 96 [2020-10-13 13:38:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:06,014 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 629 transitions. [2020-10-13 13:38:06,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 629 transitions. [2020-10-13 13:38:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:38:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:06,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:38:06,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:38:06,018 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1470603771, now seen corresponding path program 1 times [2020-10-13 13:38:06,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:06,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748081133] [2020-10-13 13:38:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:38:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:38:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:38:11,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:38:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:38:11,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 13:38:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,322 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:11,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:11,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:11,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:11,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:11,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 13:38:11,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 13:38:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:11,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:11,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:11,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:11,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:11,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:38:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:11,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:11,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:11,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:38:11,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:11,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:11,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:38:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:11,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:38:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:11,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:11,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:38:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:11,755 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 13:38:11,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748081133] [2020-10-13 13:38:11,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:11,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 13:38:11,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102932182] [2020-10-13 13:38:11,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:38:11,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:11,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:38:11,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:38:11,758 INFO L87 Difference]: Start difference. First operand 428 states and 629 transitions. Second operand 13 states. [2020-10-13 13:38:11,967 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:12,444 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:12,625 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:38:14,806 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:14,997 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:15,273 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-13 13:38:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:19,520 INFO L93 Difference]: Finished difference Result 2498 states and 3817 transitions. [2020-10-13 13:38:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-13 13:38:19,521 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 98 [2020-10-13 13:38:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:19,543 INFO L225 Difference]: With dead ends: 2498 [2020-10-13 13:38:19,544 INFO L226 Difference]: Without dead ends: 2142 [2020-10-13 13:38:19,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 13:38:19,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-10-13 13:38:19,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1814. [2020-10-13 13:38:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1814 states. [2020-10-13 13:38:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1814 states to 1814 states and 2748 transitions. [2020-10-13 13:38:19,811 INFO L78 Accepts]: Start accepts. Automaton has 1814 states and 2748 transitions. Word has length 98 [2020-10-13 13:38:19,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:19,812 INFO L479 AbstractCegarLoop]: Abstraction has 1814 states and 2748 transitions. [2020-10-13 13:38:19,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:38:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1814 states and 2748 transitions. [2020-10-13 13:38:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:38:19,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:19,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:38:19,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:38:19,815 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1554769432, now seen corresponding path program 1 times [2020-10-13 13:38:19,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:19,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702318112] [2020-10-13 13:38:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:21,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-13 13:38:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:38:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 13:38:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:38:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 13:38:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:25,102 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:25,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:25,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:25,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:25,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:38:25,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:38:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:25,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:25,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:25,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:25,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:25,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:38:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:38:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:25,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:38:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:38:25,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:25,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:38:25,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:38:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:25,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:25,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:25,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:25,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:25,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:25,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:38:25,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:38:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:25,562 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 13:38:25,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702318112] [2020-10-13 13:38:25,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:25,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:38:25,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377699237] [2020-10-13 13:38:25,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:38:25,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:25,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:38:25,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:38:25,566 INFO L87 Difference]: Start difference. First operand 1814 states and 2748 transitions. Second operand 10 states. [2020-10-13 13:38:25,886 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:26,609 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:38:28,665 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:38:28,856 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:38:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:31,712 INFO L93 Difference]: Finished difference Result 5962 states and 9147 transitions. [2020-10-13 13:38:31,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:38:31,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 99 [2020-10-13 13:38:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:31,741 INFO L225 Difference]: With dead ends: 5962 [2020-10-13 13:38:31,741 INFO L226 Difference]: Without dead ends: 4220 [2020-10-13 13:38:31,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:38:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2020-10-13 13:38:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 3584. [2020-10-13 13:38:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3584 states. [2020-10-13 13:38:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 5449 transitions. [2020-10-13 13:38:32,020 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 5449 transitions. Word has length 99 [2020-10-13 13:38:32,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:32,022 INFO L479 AbstractCegarLoop]: Abstraction has 3584 states and 5449 transitions. [2020-10-13 13:38:32,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:38:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 5449 transitions. [2020-10-13 13:38:32,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:38:32,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:32,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:38:32,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:38:32,027 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:32,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:32,027 INFO L82 PathProgramCache]: Analyzing trace with hash 75810066, now seen corresponding path program 1 times [2020-10-13 13:38:32,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:32,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742519559] [2020-10-13 13:38:32,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:35,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:37,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:38:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:38:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:37,316 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:37,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:37,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:38:37,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:37,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:38:37,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:37,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:38:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:38:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,574 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-13 13:38:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:38:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:38:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:38:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:38:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:37,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:37,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:37,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:38:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:37,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:37,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:37,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:38:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:38:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:38:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:37,822 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 13:38:37,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742519559] [2020-10-13 13:38:37,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:37,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:37,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780393540] [2020-10-13 13:38:37,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:37,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:37,835 INFO L87 Difference]: Start difference. First operand 3584 states and 5449 transitions. Second operand 9 states. [2020-10-13 13:38:38,140 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:40,943 INFO L93 Difference]: Finished difference Result 9576 states and 14710 transitions. [2020-10-13 13:38:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:38:40,944 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:38:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:40,988 INFO L225 Difference]: With dead ends: 9576 [2020-10-13 13:38:40,988 INFO L226 Difference]: Without dead ends: 6698 [2020-10-13 13:38:41,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:38:41,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6698 states. [2020-10-13 13:38:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6698 to 5776. [2020-10-13 13:38:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5776 states. [2020-10-13 13:38:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5776 states to 5776 states and 8711 transitions. [2020-10-13 13:38:41,523 INFO L78 Accepts]: Start accepts. Automaton has 5776 states and 8711 transitions. Word has length 100 [2020-10-13 13:38:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:41,524 INFO L479 AbstractCegarLoop]: Abstraction has 5776 states and 8711 transitions. [2020-10-13 13:38:41,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5776 states and 8711 transitions. [2020-10-13 13:38:41,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:38:41,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:41,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:38:41,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:38:41,526 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:41,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:41,527 INFO L82 PathProgramCache]: Analyzing trace with hash -903743150, now seen corresponding path program 1 times [2020-10-13 13:38:41,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:41,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013489294] [2020-10-13 13:38:41,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:41,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:42,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:38:46,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:38:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:38:46,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:38:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:46,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:46,801 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:46,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:38:46,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:46,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:46,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:38:46,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:38:46,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:46,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:46,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:46,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:46,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:46,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:46,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:46,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:38:46,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:46,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:46,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:46,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:47,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:47,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:38:47,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:47,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:47,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:38:47,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:47,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:38:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:47,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:47,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:47,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:38:47,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:47,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:38:47,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:38:47,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:38:47,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:38:47,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:47,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:38:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:47,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:47,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:47,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:47,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:38:47,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:38:47,163 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 13:38:47,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013489294] [2020-10-13 13:38:47,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:47,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:47,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293391075] [2020-10-13 13:38:47,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:47,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:47,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:47,166 INFO L87 Difference]: Start difference. First operand 5776 states and 8711 transitions. Second operand 9 states. [2020-10-13 13:38:47,380 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:49,589 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:38:50,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:38:50,271 INFO L93 Difference]: Finished difference Result 16456 states and 24853 transitions. [2020-10-13 13:38:50,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:38:50,272 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-13 13:38:50,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:38:50,349 INFO L225 Difference]: With dead ends: 16456 [2020-10-13 13:38:50,350 INFO L226 Difference]: Without dead ends: 10756 [2020-10-13 13:38:50,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:38:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2020-10-13 13:38:51,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 9002. [2020-10-13 13:38:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9002 states. [2020-10-13 13:38:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 13508 transitions. [2020-10-13 13:38:51,073 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 13508 transitions. Word has length 100 [2020-10-13 13:38:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:38:51,073 INFO L479 AbstractCegarLoop]: Abstraction has 9002 states and 13508 transitions. [2020-10-13 13:38:51,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:38:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 13508 transitions. [2020-10-13 13:38:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:38:51,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:38:51,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:38:51,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:38:51,076 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:38:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:38:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash -885518105, now seen corresponding path program 1 times [2020-10-13 13:38:51,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:38:51,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616700215] [2020-10-13 13:38:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:38:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:51,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:51,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:52,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:38:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:38:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,303 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:38:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:38:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:38:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:38:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:38:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:38:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:38:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:38:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:38:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:38:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:56,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:38:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:38:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:38:56,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:38:56,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:38:56,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:38:56,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:38:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:38:56,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616700215] [2020-10-13 13:38:56,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:38:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:38:56,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725741505] [2020-10-13 13:38:56,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:38:56,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:38:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:38:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:38:56,581 INFO L87 Difference]: Start difference. First operand 9002 states and 13508 transitions. Second operand 9 states. [2020-10-13 13:38:56,790 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:38:57,004 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-13 13:38:57,221 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:38:57,867 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 162 [2020-10-13 13:38:58,433 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 13:39:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:01,483 INFO L93 Difference]: Finished difference Result 29450 states and 45031 transitions. [2020-10-13 13:39:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:39:01,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-13 13:39:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:01,592 INFO L225 Difference]: With dead ends: 29450 [2020-10-13 13:39:01,593 INFO L226 Difference]: Without dead ends: 20479 [2020-10-13 13:39:01,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:39:01,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-10-13 13:39:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 17773. [2020-10-13 13:39:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17773 states. [2020-10-13 13:39:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17773 states to 17773 states and 26312 transitions. [2020-10-13 13:39:02,781 INFO L78 Accepts]: Start accepts. Automaton has 17773 states and 26312 transitions. Word has length 102 [2020-10-13 13:39:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:02,781 INFO L479 AbstractCegarLoop]: Abstraction has 17773 states and 26312 transitions. [2020-10-13 13:39:02,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 17773 states and 26312 transitions. [2020-10-13 13:39:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:39:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:02,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:02,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:39:02,784 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:02,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1007116910, now seen corresponding path program 1 times [2020-10-13 13:39:02,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:02,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446911828] [2020-10-13 13:39:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:04,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:07,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:07,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:39:07,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:39:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:39:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:39:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:39:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,021 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 13:39:08,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:39:08,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:39:08,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:39:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:08,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:39:08,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:08,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:08,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 13:39:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:39:08,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:39:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:39:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:08,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:08,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:39:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:08,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:39:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:08,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:39:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:08,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:08,267 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 13:39:08,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446911828] [2020-10-13 13:39:08,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:08,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:08,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639188121] [2020-10-13 13:39:08,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:08,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:08,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:08,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:08,268 INFO L87 Difference]: Start difference. First operand 17773 states and 26312 transitions. Second operand 9 states. [2020-10-13 13:39:08,781 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:10,843 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:39:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:11,769 INFO L93 Difference]: Finished difference Result 47181 states and 71066 transitions. [2020-10-13 13:39:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:39:11,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-13 13:39:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:11,977 INFO L225 Difference]: With dead ends: 47181 [2020-10-13 13:39:11,977 INFO L226 Difference]: Without dead ends: 29595 [2020-10-13 13:39:12,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:39:12,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29595 states. [2020-10-13 13:39:13,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29595 to 25285. [2020-10-13 13:39:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25285 states. [2020-10-13 13:39:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25285 states to 25285 states and 37652 transitions. [2020-10-13 13:39:13,283 INFO L78 Accepts]: Start accepts. Automaton has 25285 states and 37652 transitions. Word has length 103 [2020-10-13 13:39:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:13,283 INFO L479 AbstractCegarLoop]: Abstraction has 25285 states and 37652 transitions. [2020-10-13 13:39:13,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:39:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25285 states and 37652 transitions. [2020-10-13 13:39:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-13 13:39:13,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:13,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:13,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:39:13,287 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash -556621497, now seen corresponding path program 1 times [2020-10-13 13:39:13,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:13,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78931202] [2020-10-13 13:39:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:13,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:13,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:14,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:16,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:39:18,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:39:18,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:39:18,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 13:39:18,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:39:18,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,482 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:18,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:39:18,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:39:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:18,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:39:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:39:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 13:39:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:18,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:39:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:18,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:18,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:39:18,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:18,773 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 13:39:18,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78931202] [2020-10-13 13:39:18,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:18,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:39:18,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60575969] [2020-10-13 13:39:18,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:39:18,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:39:18,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:39:18,775 INFO L87 Difference]: Start difference. First operand 25285 states and 37652 transitions. Second operand 7 states. [2020-10-13 13:39:18,995 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:39:21,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:21,154 INFO L93 Difference]: Finished difference Result 54148 states and 80903 transitions. [2020-10-13 13:39:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:39:21,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-10-13 13:39:21,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:21,249 INFO L225 Difference]: With dead ends: 54148 [2020-10-13 13:39:21,249 INFO L226 Difference]: Without dead ends: 28897 [2020-10-13 13:39:21,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:39:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28897 states. [2020-10-13 13:39:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28897 to 25287. [2020-10-13 13:39:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25287 states. [2020-10-13 13:39:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25287 states to 25287 states and 37654 transitions. [2020-10-13 13:39:22,671 INFO L78 Accepts]: Start accepts. Automaton has 25287 states and 37654 transitions. Word has length 103 [2020-10-13 13:39:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:22,671 INFO L479 AbstractCegarLoop]: Abstraction has 25287 states and 37654 transitions. [2020-10-13 13:39:22,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:39:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 25287 states and 37654 transitions. [2020-10-13 13:39:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:39:22,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:22,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:22,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:39:22,674 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:22,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:22,674 INFO L82 PathProgramCache]: Analyzing trace with hash -20178437, now seen corresponding path program 1 times [2020-10-13 13:39:22,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:22,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805414260] [2020-10-13 13:39:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:22,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:22,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:22,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:24,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:39:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:39:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:27,878 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:27,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:27,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:27,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:27,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:39:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:39:28,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:28,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:28,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:28,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:28,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:28,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:28,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:28,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:39:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 13:39:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:28,166 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 13:39:28,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805414260] [2020-10-13 13:39:28,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:28,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:39:28,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171322709] [2020-10-13 13:39:28,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:39:28,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:28,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:39:28,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:39:28,168 INFO L87 Difference]: Start difference. First operand 25287 states and 37654 transitions. Second operand 8 states. [2020-10-13 13:39:28,409 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:28,613 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 13:39:30,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:30,972 INFO L93 Difference]: Finished difference Result 54030 states and 80772 transitions. [2020-10-13 13:39:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:39:30,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2020-10-13 13:39:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:31,060 INFO L225 Difference]: With dead ends: 54030 [2020-10-13 13:39:31,061 INFO L226 Difference]: Without dead ends: 28763 [2020-10-13 13:39:31,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:39:31,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2020-10-13 13:39:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 25286. [2020-10-13 13:39:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25286 states. [2020-10-13 13:39:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25286 states to 25286 states and 37650 transitions. [2020-10-13 13:39:32,252 INFO L78 Accepts]: Start accepts. Automaton has 25286 states and 37650 transitions. Word has length 104 [2020-10-13 13:39:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:32,252 INFO L479 AbstractCegarLoop]: Abstraction has 25286 states and 37650 transitions. [2020-10-13 13:39:32,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:39:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 25286 states and 37650 transitions. [2020-10-13 13:39:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:39:32,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:32,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:32,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:39:32,256 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1660250046, now seen corresponding path program 1 times [2020-10-13 13:39:32,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:32,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373488300] [2020-10-13 13:39:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:32,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:34,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:39:37,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:39:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:39:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:39:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:39:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:39:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,451 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:37,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:39:37,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:37,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:39:37,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:37,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:37,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:37,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:37,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:37,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:37,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:37,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:39:37,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:39:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:39:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:37,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 13:39:37,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:39:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:39:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:39:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:37,756 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 13:39:37,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373488300] [2020-10-13 13:39:37,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:37,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:39:37,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806940101] [2020-10-13 13:39:37,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:39:37,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:37,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:39:37,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:39:37,758 INFO L87 Difference]: Start difference. First operand 25286 states and 37650 transitions. Second operand 10 states. [2020-10-13 13:39:37,938 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:38,423 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:39:39,908 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:39:40,096 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:39:41,847 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2020-10-13 13:39:42,008 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-13 13:39:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:39:45,911 INFO L93 Difference]: Finished difference Result 91754 states and 137625 transitions. [2020-10-13 13:39:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:39:45,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 13:39:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:39:46,146 INFO L225 Difference]: With dead ends: 91754 [2020-10-13 13:39:46,146 INFO L226 Difference]: Without dead ends: 66656 [2020-10-13 13:39:46,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 13:39:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66656 states. [2020-10-13 13:39:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66656 to 58000. [2020-10-13 13:39:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58000 states. [2020-10-13 13:39:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58000 states to 58000 states and 86262 transitions. [2020-10-13 13:39:48,707 INFO L78 Accepts]: Start accepts. Automaton has 58000 states and 86262 transitions. Word has length 104 [2020-10-13 13:39:48,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:39:48,708 INFO L479 AbstractCegarLoop]: Abstraction has 58000 states and 86262 transitions. [2020-10-13 13:39:48,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:39:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 58000 states and 86262 transitions. [2020-10-13 13:39:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:39:48,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:39:48,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:39:48,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:39:48,712 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:39:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:39:48,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1175472254, now seen corresponding path program 1 times [2020-10-13 13:39:48,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:39:48,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165898130] [2020-10-13 13:39:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:39:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:48,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:50,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:50,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5313 [2020-10-13 13:39:54,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-13 13:39:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:39:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,240 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:39:54,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:39:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:39:54,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:39:54,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:54,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:54,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:39:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:54,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 13:39:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:39:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:39:54,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:54,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:39:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:39:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:39:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:39:54,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:39:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:39:54,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:39:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:39:54,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:39:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:39:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:39:54,478 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 13:39:54,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165898130] [2020-10-13 13:39:54,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:39:54,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:39:54,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929208728] [2020-10-13 13:39:54,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:39:54,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:39:54,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:39:54,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:39:54,479 INFO L87 Difference]: Start difference. First operand 58000 states and 86262 transitions. Second operand 9 states. [2020-10-13 13:39:54,682 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:00,131 INFO L93 Difference]: Finished difference Result 131921 states and 197381 transitions. [2020-10-13 13:40:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:40:00,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:40:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:00,374 INFO L225 Difference]: With dead ends: 131921 [2020-10-13 13:40:00,374 INFO L226 Difference]: Without dead ends: 95159 [2020-10-13 13:40:00,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:40:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95159 states. [2020-10-13 13:40:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95159 to 84722. [2020-10-13 13:40:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84722 states. [2020-10-13 13:40:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84722 states to 84722 states and 124738 transitions. [2020-10-13 13:40:06,602 INFO L78 Accepts]: Start accepts. Automaton has 84722 states and 124738 transitions. Word has length 104 [2020-10-13 13:40:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:06,602 INFO L479 AbstractCegarLoop]: Abstraction has 84722 states and 124738 transitions. [2020-10-13 13:40:06,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:40:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 84722 states and 124738 transitions. [2020-10-13 13:40:06,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:40:06,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:06,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:40:06,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:40:06,605 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:06,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:06,605 INFO L82 PathProgramCache]: Analyzing trace with hash 673626132, now seen corresponding path program 1 times [2020-10-13 13:40:06,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:06,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182253468] [2020-10-13 13:40:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 13:40:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:40:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:11,810 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:40:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:40:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:11,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:40:11,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:11,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:40:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:40:11,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 13:40:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:11,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:40:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:11,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:40:11,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:40:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:40:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:11,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:40:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:11,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:40:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:40:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:40:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:40:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:12,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:40:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:12,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 13:40:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:12,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:12,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:12,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:40:12,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:12,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:12,034 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 13:40:12,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182253468] [2020-10-13 13:40:12,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:40:12,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 13:40:12,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48679960] [2020-10-13 13:40:12,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:40:12,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:40:12,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:40:12,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:40:12,036 INFO L87 Difference]: Start difference. First operand 84722 states and 124738 transitions. Second operand 9 states. [2020-10-13 13:40:12,222 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:40:21,000 INFO L93 Difference]: Finished difference Result 220232 states and 326630 transitions. [2020-10-13 13:40:21,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:40:21,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-13 13:40:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:40:21,397 INFO L225 Difference]: With dead ends: 220232 [2020-10-13 13:40:21,398 INFO L226 Difference]: Without dead ends: 148836 [2020-10-13 13:40:21,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:40:21,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148836 states. [2020-10-13 13:40:29,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148836 to 134848. [2020-10-13 13:40:29,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134848 states. [2020-10-13 13:40:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134848 states to 134848 states and 195691 transitions. [2020-10-13 13:40:30,196 INFO L78 Accepts]: Start accepts. Automaton has 134848 states and 195691 transitions. Word has length 104 [2020-10-13 13:40:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:40:30,196 INFO L479 AbstractCegarLoop]: Abstraction has 134848 states and 195691 transitions. [2020-10-13 13:40:30,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:40:30,197 INFO L276 IsEmpty]: Start isEmpty. Operand 134848 states and 195691 transitions. [2020-10-13 13:40:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:40:30,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:40:30,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:40:30,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:40:30,198 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:40:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:40:30,198 INFO L82 PathProgramCache]: Analyzing trace with hash 69640175, now seen corresponding path program 1 times [2020-10-13 13:40:30,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:40:30,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696021335] [2020-10-13 13:40:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:40:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:30,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 13:40:35,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:40:35,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:40:35,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:40:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:40:35,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:40:35,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,393 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 13:40:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:40:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:40:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:40:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:40:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:40:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:40:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:40:35,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:35,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:40:35,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 13:40:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:40:35,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:40:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:40:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:35,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 13:40:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:35,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:40:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:40:35,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:40:35,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:40:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:40:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:40:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:40:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 13:40:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 13:40:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:40:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:40:35,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:40:35,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 13:40:35,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:40:35,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:40:35,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 13:40:35,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:40:35,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:40:35,628 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 13:40:35,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696021335] [2020-10-13 13:40:35,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:40:35,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 13:40:35,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234860709] [2020-10-13 13:40:35,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:40:35,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:40:35,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:40:35,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:40:35,630 INFO L87 Difference]: Start difference. First operand 134848 states and 195691 transitions. Second operand 10 states. [2020-10-13 13:40:35,822 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-13 13:40:36,261 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-13 13:40:37,555 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-13 13:40:37,747 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-13 13:41:04,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:41:04,049 INFO L93 Difference]: Finished difference Result 610621 states and 892335 transitions. [2020-10-13 13:41:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:41:04,049 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-13 13:41:04,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:41:05,407 INFO L225 Difference]: With dead ends: 610621 [2020-10-13 13:41:05,407 INFO L226 Difference]: Without dead ends: 476018 [2020-10-13 13:41:05,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 13:41:06,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476018 states.