/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:49:13,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:49:13,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:49:13,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:49:13,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:49:13,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:49:13,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:49:13,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:49:13,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:49:13,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:49:13,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:49:13,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:49:13,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:49:13,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:49:13,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:49:13,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:49:13,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:49:14,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:49:14,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:49:14,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:49:14,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:49:14,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:49:14,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:49:14,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:49:14,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:49:14,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:49:14,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:49:14,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:49:14,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:49:14,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:49:14,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:49:14,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:49:14,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:49:14,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:49:14,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:49:14,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:49:14,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:49:14,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:49:14,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:49:14,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:49:14,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:49:14,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:49:14,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:49:14,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:49:14,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:49:14,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:49:14,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:49:14,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:49:14,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:49:14,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:49:14,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:49:14,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:49:14,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:49:14,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:49:14,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:49:14,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:49:14,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:49:14,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:49:14,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:49:14,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:49:14,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:49:14,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:49:14,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:49:14,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:49:14,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:49:14,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:49:14,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:49:14,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:49:14,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:49:14,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:49:14,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:49:14,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:49:14,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:49:14,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:49:14,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:49:14,364 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:49:14,365 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:49:14,366 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:49:14,426 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2f29597/3c46defc3a014fc2bbd571967fafe006/FLAGe770865c8 [2020-10-12 19:49:14,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:49:14,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:49:14,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2f29597/3c46defc3a014fc2bbd571967fafe006/FLAGe770865c8 [2020-10-12 19:49:15,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f2f29597/3c46defc3a014fc2bbd571967fafe006 [2020-10-12 19:49:15,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:49:15,262 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:49:15,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:49:15,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:49:15,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:49:15,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:15,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ce4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15, skipping insertion in model container [2020-10-12 19:49:15,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:15,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:49:15,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:49:15,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:49:15,688 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:49:15,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:49:15,973 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:49:15,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15 WrapperNode [2020-10-12 19:49:15,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:49:15,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:49:15,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:49:15,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:49:15,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:15,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... [2020-10-12 19:49:16,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:49:16,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:49:16,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:49:16,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:49:16,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:49:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:49:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:49:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:49:16,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:49:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:49:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:49:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:49:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:49:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:49:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:49:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:49:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:49:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:49:16,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:49:17,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:49:17,012 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:49:17,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:49:17 BoogieIcfgContainer [2020-10-12 19:49:17,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:49:17,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:49:17,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:49:17,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:49:17,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:49:15" (1/3) ... [2020-10-12 19:49:17,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561f1aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:49:17, skipping insertion in model container [2020-10-12 19:49:17,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:49:15" (2/3) ... [2020-10-12 19:49:17,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561f1aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:49:17, skipping insertion in model container [2020-10-12 19:49:17,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:49:17" (3/3) ... [2020-10-12 19:49:17,026 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:49:17,036 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:49:17,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:49:17,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:49:17,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:49:17,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:49:17,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:49:17,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:49:17,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:49:17,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:49:17,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:49:17,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:49:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-10-12 19:49:17,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:49:17,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:17,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:17,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:17,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1355773301, now seen corresponding path program 1 times [2020-10-12 19:49:17,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:17,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261635909] [2020-10-12 19:49:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:17,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:18,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:18,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:19,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:22,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:22,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:49:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:49:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:22,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:49:22,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:49:22,978 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:49:22,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:23,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:23,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:23,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:49:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:23,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261635909] [2020-10-12 19:49:23,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:23,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:23,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707893212] [2020-10-12 19:49:23,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:23,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:23,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:23,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:23,117 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 10 states. [2020-10-12 19:49:23,492 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-12 19:49:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:26,337 INFO L93 Difference]: Finished difference Result 1453 states and 2341 transitions. [2020-10-12 19:49:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:26,340 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 111 [2020-10-12 19:49:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:26,368 INFO L225 Difference]: With dead ends: 1453 [2020-10-12 19:49:26,368 INFO L226 Difference]: Without dead ends: 1336 [2020-10-12 19:49:26,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-10-12 19:49:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 307. [2020-10-12 19:49:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-12 19:49:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 442 transitions. [2020-10-12 19:49:26,508 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 442 transitions. Word has length 111 [2020-10-12 19:49:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:26,509 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 442 transitions. [2020-10-12 19:49:26,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 442 transitions. [2020-10-12 19:49:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:49:26,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:26,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:26,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:49:26,524 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1905103645, now seen corresponding path program 1 times [2020-10-12 19:49:26,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:26,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811160848] [2020-10-12 19:49:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:29,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:30,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:49:31,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:49:31,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:49:31,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 19:49:31,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:31,922 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:49:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:31,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:31,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:49:31,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:31,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811160848] [2020-10-12 19:49:31,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:31,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:31,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150029573] [2020-10-12 19:49:31,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:31,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:31,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:31,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:31,990 INFO L87 Difference]: Start difference. First operand 307 states and 442 transitions. Second operand 10 states. [2020-10-12 19:49:32,258 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:49:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:34,359 INFO L93 Difference]: Finished difference Result 1944 states and 3038 transitions. [2020-10-12 19:49:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:34,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:49:34,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:34,375 INFO L225 Difference]: With dead ends: 1944 [2020-10-12 19:49:34,375 INFO L226 Difference]: Without dead ends: 1784 [2020-10-12 19:49:34,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:34,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-10-12 19:49:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 561. [2020-10-12 19:49:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-12 19:49:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 847 transitions. [2020-10-12 19:49:34,504 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 847 transitions. Word has length 113 [2020-10-12 19:49:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:34,505 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 847 transitions. [2020-10-12 19:49:34,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:34,505 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 847 transitions. [2020-10-12 19:49:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:49:34,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:34,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:34,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:49:34,510 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:34,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1050050765, now seen corresponding path program 1 times [2020-10-12 19:49:34,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:34,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681024017] [2020-10-12 19:49:34,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:34,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:34,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:35,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:36,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:36,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:39,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:49:39,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:49:39,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:49:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:40,014 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:49:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:40,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:40,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:40,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:49:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:40,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:40,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:40,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681024017] [2020-10-12 19:49:40,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:40,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:40,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744191061] [2020-10-12 19:49:40,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:40,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:40,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:40,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:40,108 INFO L87 Difference]: Start difference. First operand 561 states and 847 transitions. Second operand 10 states. [2020-10-12 19:49:40,389 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:49:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:42,229 INFO L93 Difference]: Finished difference Result 2383 states and 3729 transitions. [2020-10-12 19:49:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:42,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:49:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:42,249 INFO L225 Difference]: With dead ends: 2383 [2020-10-12 19:49:42,249 INFO L226 Difference]: Without dead ends: 2148 [2020-10-12 19:49:42,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-12 19:49:42,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 814. [2020-10-12 19:49:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-12 19:49:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1251 transitions. [2020-10-12 19:49:42,320 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1251 transitions. Word has length 113 [2020-10-12 19:49:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:42,321 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1251 transitions. [2020-10-12 19:49:42,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1251 transitions. [2020-10-12 19:49:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:49:42,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:42,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:42,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:49:42,326 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash 861464844, now seen corresponding path program 1 times [2020-10-12 19:49:42,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:42,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111970610] [2020-10-12 19:49:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:47,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:47,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:49:47,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:47,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:49:47,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:47,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:49:47,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:47,750 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:49:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:47,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:47,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:47,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:47,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:49:47,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:47,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:49:47,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:47,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111970610] [2020-10-12 19:49:47,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:47,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:47,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437045558] [2020-10-12 19:49:47,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:47,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:47,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:47,847 INFO L87 Difference]: Start difference. First operand 814 states and 1251 transitions. Second operand 10 states. [2020-10-12 19:49:48,248 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:49:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:49,814 INFO L93 Difference]: Finished difference Result 2585 states and 4050 transitions. [2020-10-12 19:49:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:49,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:49:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:49,827 INFO L225 Difference]: With dead ends: 2585 [2020-10-12 19:49:49,827 INFO L226 Difference]: Without dead ends: 2350 [2020-10-12 19:49:49,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-10-12 19:49:49,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 983. [2020-10-12 19:49:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-10-12 19:49:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1521 transitions. [2020-10-12 19:49:49,962 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1521 transitions. Word has length 113 [2020-10-12 19:49:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:49,962 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1521 transitions. [2020-10-12 19:49:49,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1521 transitions. [2020-10-12 19:49:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:49:49,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:49,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:49,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:49:49,965 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 52066166, now seen corresponding path program 1 times [2020-10-12 19:49:49,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:49,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780500635] [2020-10-12 19:49:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:51,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:51,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:55,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:49:55,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:49:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:49:55,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:49:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:49:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:49:55,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:55,316 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:49:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:49:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:55,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:49:55,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:49:55,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:49:55,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:49:55,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:49:55,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:49:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:49:55,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:49:55,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:49:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:49:55,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780500635] [2020-10-12 19:49:55,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:49:55,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:49:55,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108130858] [2020-10-12 19:49:55,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:49:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:49:55,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:49:55,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:49:55,381 INFO L87 Difference]: Start difference. First operand 983 states and 1521 transitions. Second operand 10 states. [2020-10-12 19:49:55,662 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:49:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:49:56,919 INFO L93 Difference]: Finished difference Result 2762 states and 4331 transitions. [2020-10-12 19:49:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:49:56,920 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:49:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:49:56,932 INFO L225 Difference]: With dead ends: 2762 [2020-10-12 19:49:56,932 INFO L226 Difference]: Without dead ends: 2527 [2020-10-12 19:49:56,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:49:56,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2020-10-12 19:49:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1142. [2020-10-12 19:49:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-12 19:49:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1775 transitions. [2020-10-12 19:49:57,046 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1775 transitions. Word has length 113 [2020-10-12 19:49:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:49:57,046 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1775 transitions. [2020-10-12 19:49:57,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:49:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1775 transitions. [2020-10-12 19:49:57,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:49:57,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:49:57,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:49:57,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:49:57,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:49:57,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:49:57,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1531264135, now seen corresponding path program 1 times [2020-10-12 19:49:57,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:49:57,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858098358] [2020-10-12 19:49:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:49:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:49:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:49:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:00,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:50:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:50:02,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:50:02,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:02,495 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:50:02,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:02,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:02,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:02,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:02,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:02,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858098358] [2020-10-12 19:50:02,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:02,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:50:02,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118207226] [2020-10-12 19:50:02,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:50:02,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:50:02,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:50:02,577 INFO L87 Difference]: Start difference. First operand 1142 states and 1775 transitions. Second operand 10 states. [2020-10-12 19:50:02,928 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-12 19:50:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:04,515 INFO L93 Difference]: Finished difference Result 3556 states and 5606 transitions. [2020-10-12 19:50:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:50:04,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-12 19:50:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:04,533 INFO L225 Difference]: With dead ends: 3556 [2020-10-12 19:50:04,533 INFO L226 Difference]: Without dead ends: 2610 [2020-10-12 19:50:04,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-12 19:50:04,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2020-10-12 19:50:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1142. [2020-10-12 19:50:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-12 19:50:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1769 transitions. [2020-10-12 19:50:04,653 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1769 transitions. Word has length 113 [2020-10-12 19:50:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:04,653 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1769 transitions. [2020-10-12 19:50:04,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:50:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1769 transitions. [2020-10-12 19:50:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 19:50:04,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:04,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:04,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:50:04,655 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:04,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1774388486, now seen corresponding path program 1 times [2020-10-12 19:50:04,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:04,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143577957] [2020-10-12 19:50:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:05,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:09,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:09,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:50:09,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:09,922 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:50:09,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:09,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:09,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:09,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:09,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:50:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:09,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:09,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143577957] [2020-10-12 19:50:09,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:09,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:09,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931819095] [2020-10-12 19:50:09,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:09,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:09,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:09,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:09,967 INFO L87 Difference]: Start difference. First operand 1142 states and 1769 transitions. Second operand 7 states. [2020-10-12 19:50:10,216 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:50:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:12,053 INFO L93 Difference]: Finished difference Result 9080 states and 14362 transitions. [2020-10-12 19:50:12,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:12,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-10-12 19:50:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:12,089 INFO L225 Difference]: With dead ends: 9080 [2020-10-12 19:50:12,089 INFO L226 Difference]: Without dead ends: 8018 [2020-10-12 19:50:12,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2020-10-12 19:50:12,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 3217. [2020-10-12 19:50:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3217 states. [2020-10-12 19:50:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3217 states to 3217 states and 5037 transitions. [2020-10-12 19:50:12,496 INFO L78 Accepts]: Start accepts. Automaton has 3217 states and 5037 transitions. Word has length 113 [2020-10-12 19:50:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:12,497 INFO L479 AbstractCegarLoop]: Abstraction has 3217 states and 5037 transitions. [2020-10-12 19:50:12,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3217 states and 5037 transitions. [2020-10-12 19:50:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:50:12,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:12,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:12,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:50:12,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:12,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1275758842, now seen corresponding path program 1 times [2020-10-12 19:50:12,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:12,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556550950] [2020-10-12 19:50:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:12,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:12,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:15,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:50:17,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:50:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:17,792 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:50:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:17,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:17,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:17,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:17,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:17,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556550950] [2020-10-12 19:50:17,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:17,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:17,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404632746] [2020-10-12 19:50:17,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:17,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:17,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:17,824 INFO L87 Difference]: Start difference. First operand 3217 states and 5037 transitions. Second operand 7 states. [2020-10-12 19:50:18,082 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:50:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:21,083 INFO L93 Difference]: Finished difference Result 22452 states and 35455 transitions. [2020-10-12 19:50:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:21,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:50:21,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:21,139 INFO L225 Difference]: With dead ends: 22452 [2020-10-12 19:50:21,139 INFO L226 Difference]: Without dead ends: 19525 [2020-10-12 19:50:21,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:21,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19525 states. [2020-10-12 19:50:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19525 to 9144. [2020-10-12 19:50:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9144 states. [2020-10-12 19:50:22,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9144 states to 9144 states and 14354 transitions. [2020-10-12 19:50:22,097 INFO L78 Accepts]: Start accepts. Automaton has 9144 states and 14354 transitions. Word has length 114 [2020-10-12 19:50:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:22,097 INFO L479 AbstractCegarLoop]: Abstraction has 9144 states and 14354 transitions. [2020-10-12 19:50:22,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9144 states and 14354 transitions. [2020-10-12 19:50:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:50:22,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:22,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:22,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:50:22,103 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:22,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:22,104 INFO L82 PathProgramCache]: Analyzing trace with hash -428177257, now seen corresponding path program 1 times [2020-10-12 19:50:22,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:22,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781413194] [2020-10-12 19:50:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:22,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:22,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:23,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:27,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:50:27,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:50:27,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:50:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:50:27,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:50:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:27,369 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:50:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:27,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:27,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:50:27,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:27,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781413194] [2020-10-12 19:50:27,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:27,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:27,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86080014] [2020-10-12 19:50:27,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:27,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:27,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:27,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:27,409 INFO L87 Difference]: Start difference. First operand 9144 states and 14354 transitions. Second operand 7 states. [2020-10-12 19:50:27,655 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:50:34,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:34,832 INFO L93 Difference]: Finished difference Result 78111 states and 122955 transitions. [2020-10-12 19:50:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:34,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:50:34,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:34,992 INFO L225 Difference]: With dead ends: 78111 [2020-10-12 19:50:34,992 INFO L226 Difference]: Without dead ends: 69051 [2020-10-12 19:50:35,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69051 states. [2020-10-12 19:50:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69051 to 26799. [2020-10-12 19:50:38,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26799 states. [2020-10-12 19:50:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26799 states to 26799 states and 41968 transitions. [2020-10-12 19:50:38,470 INFO L78 Accepts]: Start accepts. Automaton has 26799 states and 41968 transitions. Word has length 114 [2020-10-12 19:50:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:38,470 INFO L479 AbstractCegarLoop]: Abstraction has 26799 states and 41968 transitions. [2020-10-12 19:50:38,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 26799 states and 41968 transitions. [2020-10-12 19:50:38,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:50:38,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:38,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:38,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:50:38,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:38,484 INFO L82 PathProgramCache]: Analyzing trace with hash -280816518, now seen corresponding path program 1 times [2020-10-12 19:50:38,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:38,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010966628] [2020-10-12 19:50:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:38,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:43,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:43,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:50:43,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:50:43,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:50:43,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:50:43,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:50:43,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:43,915 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:50:43,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:43,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:43,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:43,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:43,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:43,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010966628] [2020-10-12 19:50:43,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:43,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:43,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622445182] [2020-10-12 19:50:43,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:43,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:43,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:43,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:43,955 INFO L87 Difference]: Start difference. First operand 26799 states and 41968 transitions. Second operand 7 states. [2020-10-12 19:50:44,291 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:50:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:52,023 INFO L93 Difference]: Finished difference Result 92341 states and 144837 transitions. [2020-10-12 19:50:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:52,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:50:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:52,128 INFO L225 Difference]: With dead ends: 92341 [2020-10-12 19:50:52,128 INFO L226 Difference]: Without dead ends: 66863 [2020-10-12 19:50:52,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:52,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66863 states. [2020-10-12 19:50:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66863 to 23585. [2020-10-12 19:50:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23585 states. [2020-10-12 19:50:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23585 states to 23585 states and 36919 transitions. [2020-10-12 19:50:55,005 INFO L78 Accepts]: Start accepts. Automaton has 23585 states and 36919 transitions. Word has length 115 [2020-10-12 19:50:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:55,005 INFO L479 AbstractCegarLoop]: Abstraction has 23585 states and 36919 transitions. [2020-10-12 19:50:55,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 23585 states and 36919 transitions. [2020-10-12 19:50:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:50:55,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:55,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:55,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:50:55,015 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:55,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:55,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1220178199, now seen corresponding path program 1 times [2020-10-12 19:50:55,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:55,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732549171] [2020-10-12 19:50:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:51:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:51:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:51:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:51:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:51:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 19:51:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:00,283 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:51:00,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:00,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:51:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:00,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732549171] [2020-10-12 19:51:00,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:00,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:51:00,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85874069] [2020-10-12 19:51:00,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:51:00,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:51:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:51:00,311 INFO L87 Difference]: Start difference. First operand 23585 states and 36919 transitions. Second operand 7 states. [2020-10-12 19:51:00,558 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:51:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:51:11,193 INFO L93 Difference]: Finished difference Result 115151 states and 180961 transitions. [2020-10-12 19:51:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:51:11,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2020-10-12 19:51:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:51:11,302 INFO L225 Difference]: With dead ends: 115151 [2020-10-12 19:51:11,302 INFO L226 Difference]: Without dead ends: 98012 [2020-10-12 19:51:11,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:51:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98012 states. [2020-10-12 19:51:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98012 to 33113. [2020-10-12 19:51:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33113 states. [2020-10-12 19:51:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33113 states to 33113 states and 51873 transitions. [2020-10-12 19:51:14,854 INFO L78 Accepts]: Start accepts. Automaton has 33113 states and 51873 transitions. Word has length 115 [2020-10-12 19:51:14,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:51:14,855 INFO L479 AbstractCegarLoop]: Abstraction has 33113 states and 51873 transitions. [2020-10-12 19:51:14,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:51:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand 33113 states and 51873 transitions. [2020-10-12 19:51:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:51:14,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:51:14,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:51:14,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:51:14,864 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:51:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:51:14,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1959813096, now seen corresponding path program 1 times [2020-10-12 19:51:14,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:51:14,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007277096] [2020-10-12 19:51:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:51:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:14,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:14,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:15,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:19,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:19,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:51:19,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:51:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:51:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:20,463 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:51:20,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:51:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:51:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:51:20,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:51:20,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:51:20,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:51:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:51:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:51:20,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007277096] [2020-10-12 19:51:20,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:51:20,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:51:20,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537123121] [2020-10-12 19:51:20,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:51:20,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:51:20,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:51:20,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:51:20,542 INFO L87 Difference]: Start difference. First operand 33113 states and 51873 transitions. Second operand 11 states. [2020-10-12 19:51:20,951 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-12 19:52:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:52:04,776 INFO L93 Difference]: Finished difference Result 355963 states and 560090 transitions. [2020-10-12 19:52:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:52:04,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 19:52:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:52:05,211 INFO L225 Difference]: With dead ends: 355963 [2020-10-12 19:52:05,212 INFO L226 Difference]: Without dead ends: 323377 [2020-10-12 19:52:05,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:52:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323377 states. [2020-10-12 19:52:16,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323377 to 51857. [2020-10-12 19:52:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51857 states. [2020-10-12 19:52:16,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51857 states to 51857 states and 81281 transitions. [2020-10-12 19:52:16,351 INFO L78 Accepts]: Start accepts. Automaton has 51857 states and 81281 transitions. Word has length 116 [2020-10-12 19:52:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:52:16,352 INFO L479 AbstractCegarLoop]: Abstraction has 51857 states and 81281 transitions. [2020-10-12 19:52:16,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:52:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 51857 states and 81281 transitions. [2020-10-12 19:52:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:52:16,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:52:16,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:52:16,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:52:16,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:52:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:52:16,362 INFO L82 PathProgramCache]: Analyzing trace with hash -955190560, now seen corresponding path program 1 times [2020-10-12 19:52:16,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:52:16,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085616495] [2020-10-12 19:52:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:52:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:16,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:16,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:19,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 19:52:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:21,660 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:52:21,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:52:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:52:21,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:52:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:52:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:52:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:52:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:52:21,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085616495] [2020-10-12 19:52:21,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:52:21,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:52:21,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353412443] [2020-10-12 19:52:21,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:52:21,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:52:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:52:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:52:21,696 INFO L87 Difference]: Start difference. First operand 51857 states and 81281 transitions. Second operand 7 states. [2020-10-12 19:52:21,950 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-12 19:53:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:53:04,552 INFO L93 Difference]: Finished difference Result 312836 states and 490451 transitions. [2020-10-12 19:53:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:53:04,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-12 19:53:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:53:04,910 INFO L225 Difference]: With dead ends: 312836 [2020-10-12 19:53:04,910 INFO L226 Difference]: Without dead ends: 280714 [2020-10-12 19:53:04,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:53:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280714 states.