/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.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:43:44,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:43:44,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:43:44,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:43:44,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:43:44,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:43:44,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:43:44,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:43:44,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:43:44,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:43:44,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:43:44,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:43:44,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:43:44,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:43:44,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:43:44,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:43:44,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:43:44,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:43:44,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:43:44,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:43:44,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:43:44,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:43:44,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:43:44,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:43:44,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:43:44,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:43:44,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:43:44,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:43:44,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:43:44,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:43:44,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:43:44,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:43:44,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:43:44,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:43:44,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:43:44,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:43:44,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:43:44,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:43:44,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:43:44,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:43:44,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:43:44,955 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 19:43:44,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:43:44,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:43:44,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:43:44,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:43:44,980 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:43:44,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:43:44,980 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:43:44,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:43:44,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:43:44,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:43:44,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:43:44,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:43:44,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:43:44,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:43:44,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:43:44,982 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:43:44,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:43:44,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:43:44,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:43:44,983 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:43:44,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:43:44,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:43:44,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:43:44,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:43:44,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:43:44,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:43:44,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:43:44,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:43:44,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:43:44,985 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 19:43:45,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:43:45,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:43:45,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:43:45,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:43:45,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:43:45,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:43:45,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4d944f5/135f9488086e43b682ce585f44372a8d/FLAGbc70eb7db [2020-10-12 19:43:46,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:43:46,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:43:46,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4d944f5/135f9488086e43b682ce585f44372a8d/FLAGbc70eb7db [2020-10-12 19:43:46,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b4d944f5/135f9488086e43b682ce585f44372a8d [2020-10-12 19:43:46,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:43:46,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:43:46,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:43:46,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:43:46,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:43:46,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:43:46" (1/1) ... [2020-10-12 19:43:46,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe29230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:46, skipping insertion in model container [2020-10-12 19:43:46,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:43:46" (1/1) ... [2020-10-12 19:43:46,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:43:46,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:43:46,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:43:46,890 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:43:46,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:43:47,034 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:43:47,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47 WrapperNode [2020-10-12 19:43:47,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:43:47,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:43:47,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:43:47,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:43:47,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (1/1) ... [2020-10-12 19:43:47,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:43:47,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:43:47,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:43:47,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:43:47,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (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 19:43:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:43:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:43:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:43:47,177 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:43:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:43:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:43:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:43:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:43:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:43:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:43:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:43:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:43:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:43:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:43:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:43:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:43:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:43:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:43:47,879 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:43:47,879 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:43:47,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:43:47 BoogieIcfgContainer [2020-10-12 19:43:47,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:43:47,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:43:47,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:43:47,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:43:47,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:43:46" (1/3) ... [2020-10-12 19:43:47,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be99dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:43:47, skipping insertion in model container [2020-10-12 19:43:47,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:43:47" (2/3) ... [2020-10-12 19:43:47,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6be99dce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:43:47, skipping insertion in model container [2020-10-12 19:43:47,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:43:47" (3/3) ... [2020-10-12 19:43:47,894 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:43:47,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:43:47,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:43:47,929 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:43:47,956 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:43:47,956 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:43:47,956 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:43:47,956 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:43:47,957 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:43:47,957 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:43:47,957 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:43:47,957 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:43:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-10-12 19:43:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:43:47,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:47,993 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] [2020-10-12 19:43:47,993 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:48,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1263319593, now seen corresponding path program 1 times [2020-10-12 19:43:48,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:48,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596584370] [2020-10-12 19:43:48,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:48,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:50,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:50,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:43:53,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:43:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:43:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:43:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:43:53,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:43:53,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:43:54,091 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:43:54,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:54,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:54,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:54,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:54,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:43:54,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:54,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:43:54,177 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 19:43:54,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596584370] [2020-10-12 19:43:54,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:54,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:43:54,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052398955] [2020-10-12 19:43:54,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:43:54,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:54,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:43:54,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:43:54,212 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 9 states. [2020-10-12 19:43:54,567 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:43:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:56,064 INFO L93 Difference]: Finished difference Result 1009 states and 1596 transitions. [2020-10-12 19:43:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:43:56,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-12 19:43:56,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:56,088 INFO L225 Difference]: With dead ends: 1009 [2020-10-12 19:43:56,088 INFO L226 Difference]: Without dead ends: 887 [2020-10-12 19:43:56,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:43:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-12 19:43:56,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 185. [2020-10-12 19:43:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-12 19:43:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 266 transitions. [2020-10-12 19:43:56,170 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 266 transitions. Word has length 76 [2020-10-12 19:43:56,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:56,171 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 266 transitions. [2020-10-12 19:43:56,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:43:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 266 transitions. [2020-10-12 19:43:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:43:56,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:56,174 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] [2020-10-12 19:43:56,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:43:56,175 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:56,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash -808912086, now seen corresponding path program 1 times [2020-10-12 19:43:56,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:56,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027413749] [2020-10-12 19:43:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:58,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:01,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:01,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:01,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:44:01,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 19:44:01,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:44:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:01,520 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:01,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:01,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:01,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:01,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:01,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:01,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:44:01,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:01,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:01,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:01,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:01,592 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 19:44:01,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027413749] [2020-10-12 19:44:01,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:01,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:01,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278765243] [2020-10-12 19:44:01,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:01,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:01,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:01,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:01,597 INFO L87 Difference]: Start difference. First operand 185 states and 266 transitions. Second operand 9 states. [2020-10-12 19:44:01,933 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:02,968 INFO L93 Difference]: Finished difference Result 1405 states and 2193 transitions. [2020-10-12 19:44:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:02,969 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:02,978 INFO L225 Difference]: With dead ends: 1405 [2020-10-12 19:44:02,978 INFO L226 Difference]: Without dead ends: 1267 [2020-10-12 19:44:02,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2020-10-12 19:44:03,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 385. [2020-10-12 19:44:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-10-12 19:44:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 584 transitions. [2020-10-12 19:44:03,060 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 584 transitions. Word has length 78 [2020-10-12 19:44:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:03,061 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 584 transitions. [2020-10-12 19:44:03,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:03,061 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 584 transitions. [2020-10-12 19:44:03,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:03,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:03,064 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] [2020-10-12 19:44:03,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:44:03,064 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:03,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:03,064 INFO L82 PathProgramCache]: Analyzing trace with hash 309423158, now seen corresponding path program 1 times [2020-10-12 19:44:03,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:03,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890515283] [2020-10-12 19:44:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:03,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:06,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:08,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:08,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:08,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:44:08,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:08,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:08,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:08,347 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:08,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:08,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:08,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:08,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:08,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:44:08,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:08,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:08,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:08,394 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 19:44:08,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890515283] [2020-10-12 19:44:08,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:08,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:08,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735436535] [2020-10-12 19:44:08,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:08,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:08,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:08,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:08,399 INFO L87 Difference]: Start difference. First operand 385 states and 584 transitions. Second operand 9 states. [2020-10-12 19:44:08,633 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:09,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:09,801 INFO L93 Difference]: Finished difference Result 1759 states and 2748 transitions. [2020-10-12 19:44:09,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:09,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:09,811 INFO L225 Difference]: With dead ends: 1759 [2020-10-12 19:44:09,811 INFO L226 Difference]: Without dead ends: 1557 [2020-10-12 19:44:09,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:09,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2020-10-12 19:44:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 589. [2020-10-12 19:44:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-12 19:44:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 909 transitions. [2020-10-12 19:44:09,871 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 909 transitions. Word has length 78 [2020-10-12 19:44:09,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:09,871 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 909 transitions. [2020-10-12 19:44:09,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 909 transitions. [2020-10-12 19:44:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:09,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:09,874 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] [2020-10-12 19:44:09,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:44:09,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:09,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:09,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1700660414, now seen corresponding path program 1 times [2020-10-12 19:44:09,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:09,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499291999] [2020-10-12 19:44:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:10,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:10,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:14,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:14,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:14,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:44:14,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:14,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:14,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:14,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:15,318 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:15,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:15,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:44:15,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:15,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:15,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:15,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:44:15,388 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 19:44:15,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499291999] [2020-10-12 19:44:15,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:15,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:15,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713243264] [2020-10-12 19:44:15,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:15,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:15,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:15,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:15,394 INFO L87 Difference]: Start difference. First operand 589 states and 909 transitions. Second operand 9 states. [2020-10-12 19:44:15,625 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:16,976 INFO L93 Difference]: Finished difference Result 1908 states and 2984 transitions. [2020-10-12 19:44:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:16,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:16,986 INFO L225 Difference]: With dead ends: 1908 [2020-10-12 19:44:16,987 INFO L226 Difference]: Without dead ends: 1706 [2020-10-12 19:44:16,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-10-12 19:44:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 725. [2020-10-12 19:44:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-10-12 19:44:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1126 transitions. [2020-10-12 19:44:17,065 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1126 transitions. Word has length 78 [2020-10-12 19:44:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:17,067 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 1126 transitions. [2020-10-12 19:44:17,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1126 transitions. [2020-10-12 19:44:17,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:17,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:17,072 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] [2020-10-12 19:44:17,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:44:17,072 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 552474929, now seen corresponding path program 1 times [2020-10-12 19:44:17,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:17,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328877387] [2020-10-12 19:44:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:18,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:22,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:44:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:44:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:22,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:22,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:22,453 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:22,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:22,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:22,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:44:22,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:22,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:22,507 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 19:44:22,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328877387] [2020-10-12 19:44:22,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:22,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:22,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139386876] [2020-10-12 19:44:22,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:22,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:22,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:22,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:22,511 INFO L87 Difference]: Start difference. First operand 725 states and 1126 transitions. Second operand 9 states. [2020-10-12 19:44:22,825 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:44:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:23,728 INFO L93 Difference]: Finished difference Result 2425 states and 3811 transitions. [2020-10-12 19:44:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:23,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:23,738 INFO L225 Difference]: With dead ends: 2425 [2020-10-12 19:44:23,738 INFO L226 Difference]: Without dead ends: 1747 [2020-10-12 19:44:23,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:23,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-12 19:44:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 725. [2020-10-12 19:44:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-10-12 19:44:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1121 transitions. [2020-10-12 19:44:23,820 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1121 transitions. Word has length 78 [2020-10-12 19:44:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:23,820 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 1121 transitions. [2020-10-12 19:44:23,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1121 transitions. [2020-10-12 19:44:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:23,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:23,823 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] [2020-10-12 19:44:23,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:44:23,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:23,823 INFO L82 PathProgramCache]: Analyzing trace with hash 532425586, now seen corresponding path program 1 times [2020-10-12 19:44:23,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:23,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070406966] [2020-10-12 19:44:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:23,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:24,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:24,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:25,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:25,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:28,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:44:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:44:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 19:44:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:44:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:29,070 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:29,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:29,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:29,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:29,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:44:29,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:29,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:29,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:29,097 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 19:44:29,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070406966] [2020-10-12 19:44:29,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:29,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:44:29,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643091292] [2020-10-12 19:44:29,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:44:29,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:29,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:44:29,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:44:29,100 INFO L87 Difference]: Start difference. First operand 725 states and 1121 transitions. Second operand 5 states. [2020-10-12 19:44:29,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:29,891 INFO L93 Difference]: Finished difference Result 1411 states and 2196 transitions. [2020-10-12 19:44:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:44:29,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 19:44:29,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:29,898 INFO L225 Difference]: With dead ends: 1411 [2020-10-12 19:44:29,899 INFO L226 Difference]: Without dead ends: 1409 [2020-10-12 19:44:29,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:44:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2020-10-12 19:44:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 743. [2020-10-12 19:44:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-10-12 19:44:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1139 transitions. [2020-10-12 19:44:29,993 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1139 transitions. Word has length 78 [2020-10-12 19:44:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:29,994 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 1139 transitions. [2020-10-12 19:44:29,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:44:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1139 transitions. [2020-10-12 19:44:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:29,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:29,995 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] [2020-10-12 19:44:29,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:44:29,996 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1676915192, now seen corresponding path program 1 times [2020-10-12 19:44:29,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:29,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699767815] [2020-10-12 19:44:29,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:44:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:35,355 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:35,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:35,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:35,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:35,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:35,397 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 19:44:35,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699767815] [2020-10-12 19:44:35,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:35,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:35,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789178002] [2020-10-12 19:44:35,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:35,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:35,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:35,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:35,401 INFO L87 Difference]: Start difference. First operand 743 states and 1139 transitions. Second operand 9 states. [2020-10-12 19:44:35,657 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:36,495 INFO L93 Difference]: Finished difference Result 2027 states and 3137 transitions. [2020-10-12 19:44:36,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:36,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:36,505 INFO L225 Difference]: With dead ends: 2027 [2020-10-12 19:44:36,505 INFO L226 Difference]: Without dead ends: 1821 [2020-10-12 19:44:36,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:36,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2020-10-12 19:44:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 883. [2020-10-12 19:44:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-10-12 19:44:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1359 transitions. [2020-10-12 19:44:36,614 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1359 transitions. Word has length 78 [2020-10-12 19:44:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:36,615 INFO L479 AbstractCegarLoop]: Abstraction has 883 states and 1359 transitions. [2020-10-12 19:44:36,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1359 transitions. [2020-10-12 19:44:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:36,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:36,616 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] [2020-10-12 19:44:36,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:44:36,617 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:36,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2073186308, now seen corresponding path program 1 times [2020-10-12 19:44:36,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:36,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790935501] [2020-10-12 19:44:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:36,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:38,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:41,908 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:41,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:41,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:41,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:41,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:41,955 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 19:44:41,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790935501] [2020-10-12 19:44:41,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:41,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:41,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248927729] [2020-10-12 19:44:41,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:41,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:41,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:41,963 INFO L87 Difference]: Start difference. First operand 883 states and 1359 transitions. Second operand 9 states. [2020-10-12 19:44:42,175 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:43,260 INFO L93 Difference]: Finished difference Result 2252 states and 3490 transitions. [2020-10-12 19:44:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:43,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:43,279 INFO L225 Difference]: With dead ends: 2252 [2020-10-12 19:44:43,279 INFO L226 Difference]: Without dead ends: 2046 [2020-10-12 19:44:43,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:43,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2020-10-12 19:44:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 1023. [2020-10-12 19:44:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2020-10-12 19:44:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1579 transitions. [2020-10-12 19:44:43,400 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1579 transitions. Word has length 78 [2020-10-12 19:44:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:43,401 INFO L479 AbstractCegarLoop]: Abstraction has 1023 states and 1579 transitions. [2020-10-12 19:44:43,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1579 transitions. [2020-10-12 19:44:43,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:44:43,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:43,403 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] [2020-10-12 19:44:43,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:44:43,403 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:43,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1378930704, now seen corresponding path program 1 times [2020-10-12 19:44:43,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:43,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503813908] [2020-10-12 19:44:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:43,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:45,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:45,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:48,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:44:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:48,725 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:48,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:48,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:44:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:48,769 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 19:44:48,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503813908] [2020-10-12 19:44:48,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:48,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:48,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657444477] [2020-10-12 19:44:48,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:48,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:48,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:48,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:48,771 INFO L87 Difference]: Start difference. First operand 1023 states and 1579 transitions. Second operand 9 states. [2020-10-12 19:44:48,984 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:44:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:50,120 INFO L93 Difference]: Finished difference Result 2435 states and 3777 transitions. [2020-10-12 19:44:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:44:50,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:44:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:50,131 INFO L225 Difference]: With dead ends: 2435 [2020-10-12 19:44:50,132 INFO L226 Difference]: Without dead ends: 2229 [2020-10-12 19:44:50,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:44:50,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2020-10-12 19:44:50,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1163. [2020-10-12 19:44:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-10-12 19:44:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1799 transitions. [2020-10-12 19:44:50,280 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1799 transitions. Word has length 78 [2020-10-12 19:44:50,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:50,280 INFO L479 AbstractCegarLoop]: Abstraction has 1163 states and 1799 transitions. [2020-10-12 19:44:50,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:44:50,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1799 transitions. [2020-10-12 19:44:50,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:44:50,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:50,282 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] [2020-10-12 19:44:50,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:44:50,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:50,282 INFO L82 PathProgramCache]: Analyzing trace with hash -665056210, now seen corresponding path program 1 times [2020-10-12 19:44:50,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:50,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085213424] [2020-10-12 19:44:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:44:52,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:44:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:44:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:52,372 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:52,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:52,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:52,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:52,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:52,411 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 19:44:52,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085213424] [2020-10-12 19:44:52,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:52,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:44:52,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568617809] [2020-10-12 19:44:52,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:44:52,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:52,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:44:52,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:44:52,413 INFO L87 Difference]: Start difference. First operand 1163 states and 1799 transitions. Second operand 5 states. [2020-10-12 19:44:52,605 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 19:44:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:53,525 INFO L93 Difference]: Finished difference Result 4211 states and 6586 transitions. [2020-10-12 19:44:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:44:53,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 19:44:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:53,540 INFO L225 Difference]: With dead ends: 4211 [2020-10-12 19:44:53,540 INFO L226 Difference]: Without dead ends: 3095 [2020-10-12 19:44:53,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:44:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-10-12 19:44:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3091. [2020-10-12 19:44:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3091 states. [2020-10-12 19:44:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 4789 transitions. [2020-10-12 19:44:53,862 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 4789 transitions. Word has length 79 [2020-10-12 19:44:53,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:53,863 INFO L479 AbstractCegarLoop]: Abstraction has 3091 states and 4789 transitions. [2020-10-12 19:44:53,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:44:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 4789 transitions. [2020-10-12 19:44:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:44:53,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:53,865 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] [2020-10-12 19:44:53,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:44:53,866 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:53,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1091626807, now seen corresponding path program 1 times [2020-10-12 19:44:53,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:53,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663616476] [2020-10-12 19:44:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:58,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:58,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:44:58,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:58,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:44:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:44:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 19:44:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:44:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:59,093 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:59,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:59,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:59,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:59,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:59,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:44:59,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:59,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:59,120 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 19:44:59,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663616476] [2020-10-12 19:44:59,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:59,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:44:59,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650696692] [2020-10-12 19:44:59,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:44:59,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:59,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:44:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:44:59,123 INFO L87 Difference]: Start difference. First operand 3091 states and 4789 transitions. Second operand 8 states. [2020-10-12 19:45:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:00,920 INFO L93 Difference]: Finished difference Result 6546 states and 10102 transitions. [2020-10-12 19:45:00,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:45:00,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-12 19:45:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:00,956 INFO L225 Difference]: With dead ends: 6546 [2020-10-12 19:45:00,956 INFO L226 Difference]: Without dead ends: 6155 [2020-10-12 19:45:00,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:45:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6155 states. [2020-10-12 19:45:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6155 to 3118. [2020-10-12 19:45:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-12 19:45:01,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4832 transitions. [2020-10-12 19:45:01,353 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4832 transitions. Word has length 80 [2020-10-12 19:45:01,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:01,353 INFO L479 AbstractCegarLoop]: Abstraction has 3118 states and 4832 transitions. [2020-10-12 19:45:01,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:45:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4832 transitions. [2020-10-12 19:45:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:01,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:01,356 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] [2020-10-12 19:45:01,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:45:01,356 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:01,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1193256917, now seen corresponding path program 1 times [2020-10-12 19:45:01,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:01,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852301063] [2020-10-12 19:45:01,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:01,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:02,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:05,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:06,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 19:45:06,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:06,572 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:06,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:06,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:06,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:06,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:06,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:06,592 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 19:45:06,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852301063] [2020-10-12 19:45:06,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:06,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:45:06,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937812970] [2020-10-12 19:45:06,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:45:06,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:06,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:45:06,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:45:06,595 INFO L87 Difference]: Start difference. First operand 3118 states and 4832 transitions. Second operand 8 states. [2020-10-12 19:45:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:08,238 INFO L93 Difference]: Finished difference Result 6582 states and 10154 transitions. [2020-10-12 19:45:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:45:08,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-12 19:45:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:08,252 INFO L225 Difference]: With dead ends: 6582 [2020-10-12 19:45:08,252 INFO L226 Difference]: Without dead ends: 6191 [2020-10-12 19:45:08,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:45:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2020-10-12 19:45:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 3158. [2020-10-12 19:45:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3158 states. [2020-10-12 19:45:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 4894 transitions. [2020-10-12 19:45:08,686 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 4894 transitions. Word has length 80 [2020-10-12 19:45:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:08,686 INFO L479 AbstractCegarLoop]: Abstraction has 3158 states and 4894 transitions. [2020-10-12 19:45:08,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:45:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 4894 transitions. [2020-10-12 19:45:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:08,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:08,688 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] [2020-10-12 19:45:08,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:45:08,689 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:08,689 INFO L82 PathProgramCache]: Analyzing trace with hash -848575036, now seen corresponding path program 1 times [2020-10-12 19:45:08,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:08,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728398955] [2020-10-12 19:45:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:09,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:13,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:13,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:13,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:13,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:45:13,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:13,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:45:13,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:13,971 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:13,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:14,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:14,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:14,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:14,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:14,032 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 19:45:14,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728398955] [2020-10-12 19:45:14,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:14,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:14,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319459424] [2020-10-12 19:45:14,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:14,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:14,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:14,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:14,035 INFO L87 Difference]: Start difference. First operand 3158 states and 4894 transitions. Second operand 7 states. [2020-10-12 19:45:14,261 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:45:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:15,482 INFO L93 Difference]: Finished difference Result 8866 states and 13798 transitions. [2020-10-12 19:45:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:45:15,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:45:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:15,502 INFO L225 Difference]: With dead ends: 8866 [2020-10-12 19:45:15,502 INFO L226 Difference]: Without dead ends: 6687 [2020-10-12 19:45:15,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:45:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2020-10-12 19:45:15,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 3094. [2020-10-12 19:45:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3094 states. [2020-10-12 19:45:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 4793 transitions. [2020-10-12 19:45:15,938 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 4793 transitions. Word has length 80 [2020-10-12 19:45:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:15,938 INFO L479 AbstractCegarLoop]: Abstraction has 3094 states and 4793 transitions. [2020-10-12 19:45:15,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:45:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 4793 transitions. [2020-10-12 19:45:15,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:15,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:15,940 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] [2020-10-12 19:45:15,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:45:15,940 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:15,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2123364895, now seen corresponding path program 1 times [2020-10-12 19:45:15,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:15,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018734189] [2020-10-12 19:45:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:15,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:19,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:45:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:21,161 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:21,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:21,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:21,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:21,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:45:21,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:45:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:21,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:45:21,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:21,184 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 19:45:21,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018734189] [2020-10-12 19:45:21,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:21,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:45:21,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449147908] [2020-10-12 19:45:21,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:45:21,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:21,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:45:21,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:45:21,186 INFO L87 Difference]: Start difference. First operand 3094 states and 4793 transitions. Second operand 8 states. [2020-10-12 19:45:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:22,807 INFO L93 Difference]: Finished difference Result 6917 states and 10672 transitions. [2020-10-12 19:45:22,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:45:22,808 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-12 19:45:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:22,822 INFO L225 Difference]: With dead ends: 6917 [2020-10-12 19:45:22,822 INFO L226 Difference]: Without dead ends: 6329 [2020-10-12 19:45:22,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:45:22,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6329 states. [2020-10-12 19:45:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6329 to 3205. [2020-10-12 19:45:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2020-10-12 19:45:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4970 transitions. [2020-10-12 19:45:23,269 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4970 transitions. Word has length 80 [2020-10-12 19:45:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:23,269 INFO L479 AbstractCegarLoop]: Abstraction has 3205 states and 4970 transitions. [2020-10-12 19:45:23,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:45:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4970 transitions. [2020-10-12 19:45:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:23,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:23,271 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] [2020-10-12 19:45:23,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:45:23,272 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:23,272 INFO L82 PathProgramCache]: Analyzing trace with hash 129770448, now seen corresponding path program 1 times [2020-10-12 19:45:23,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:23,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265338409] [2020-10-12 19:45:23,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:23,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:45:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:28,557 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:28,594 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 19:45:28,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265338409] [2020-10-12 19:45:28,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:28,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:28,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883293930] [2020-10-12 19:45:28,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:28,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:28,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:28,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:28,596 INFO L87 Difference]: Start difference. First operand 3205 states and 4970 transitions. Second operand 7 states. [2020-10-12 19:45:28,781 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:45:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:30,198 INFO L93 Difference]: Finished difference Result 10367 states and 16088 transitions. [2020-10-12 19:45:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:45:30,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:45:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:30,213 INFO L225 Difference]: With dead ends: 10367 [2020-10-12 19:45:30,214 INFO L226 Difference]: Without dead ends: 7251 [2020-10-12 19:45:30,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:45:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2020-10-12 19:45:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 3133. [2020-10-12 19:45:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3133 states. [2020-10-12 19:45:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4850 transitions. [2020-10-12 19:45:30,717 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4850 transitions. Word has length 80 [2020-10-12 19:45:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:30,717 INFO L479 AbstractCegarLoop]: Abstraction has 3133 states and 4850 transitions. [2020-10-12 19:45:30,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:45:30,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4850 transitions. [2020-10-12 19:45:30,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:30,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:30,719 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] [2020-10-12 19:45:30,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:45:30,719 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:30,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1174740956, now seen corresponding path program 1 times [2020-10-12 19:45:30,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:30,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875107644] [2020-10-12 19:45:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:30,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:35,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:35,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:35,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:45:35,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:35,989 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:35,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:36,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:36,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:36,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:45:36,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:36,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:36,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:36,035 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 19:45:36,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875107644] [2020-10-12 19:45:36,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:36,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:36,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105302339] [2020-10-12 19:45:36,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:36,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:36,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:36,037 INFO L87 Difference]: Start difference. First operand 3133 states and 4850 transitions. Second operand 7 states. [2020-10-12 19:45:36,225 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:45:37,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:37,769 INFO L93 Difference]: Finished difference Result 9479 states and 14656 transitions. [2020-10-12 19:45:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:45:37,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:45:37,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:37,780 INFO L225 Difference]: With dead ends: 9479 [2020-10-12 19:45:37,780 INFO L226 Difference]: Without dead ends: 6435 [2020-10-12 19:45:37,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:45:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6435 states. [2020-10-12 19:45:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6435 to 3221. [2020-10-12 19:45:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3221 states. [2020-10-12 19:45:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4978 transitions. [2020-10-12 19:45:38,257 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4978 transitions. Word has length 80 [2020-10-12 19:45:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:38,257 INFO L479 AbstractCegarLoop]: Abstraction has 3221 states and 4978 transitions. [2020-10-12 19:45:38,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:45:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4978 transitions. [2020-10-12 19:45:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:38,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:38,259 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] [2020-10-12 19:45:38,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:45:38,259 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:38,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:38,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1775904478, now seen corresponding path program 1 times [2020-10-12 19:45:38,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:38,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029055766] [2020-10-12 19:45:38,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:45:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:43,488 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:43,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:43,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:43,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:43,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:43,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:43,522 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 19:45:43,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029055766] [2020-10-12 19:45:43,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:43,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:43,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917695189] [2020-10-12 19:45:43,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:43,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:43,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:43,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:43,524 INFO L87 Difference]: Start difference. First operand 3221 states and 4978 transitions. Second operand 7 states. [2020-10-12 19:45:43,732 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:45:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:45,310 INFO L93 Difference]: Finished difference Result 9099 states and 14040 transitions. [2020-10-12 19:45:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:45:45,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:45:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:45,317 INFO L225 Difference]: With dead ends: 9099 [2020-10-12 19:45:45,317 INFO L226 Difference]: Without dead ends: 6055 [2020-10-12 19:45:45,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:45:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2020-10-12 19:45:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 3301. [2020-10-12 19:45:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3301 states. [2020-10-12 19:45:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 5090 transitions. [2020-10-12 19:45:45,927 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 5090 transitions. Word has length 80 [2020-10-12 19:45:45,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:45,927 INFO L479 AbstractCegarLoop]: Abstraction has 3301 states and 5090 transitions. [2020-10-12 19:45:45,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:45:45,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 5090 transitions. [2020-10-12 19:45:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:45,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:45,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:45:45,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:45:45,929 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:45,930 INFO L82 PathProgramCache]: Analyzing trace with hash -340357610, now seen corresponding path program 1 times [2020-10-12 19:45:45,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:45,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960245842] [2020-10-12 19:45:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:46,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:51,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:45:51,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:45:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:51,219 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:51,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:51,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:45:51,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960245842] [2020-10-12 19:45:51,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:51,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:51,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231458063] [2020-10-12 19:45:51,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:51,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:51,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:51,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:51,255 INFO L87 Difference]: Start difference. First operand 3301 states and 5090 transitions. Second operand 7 states. [2020-10-12 19:45:51,431 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:45:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:45:53,036 INFO L93 Difference]: Finished difference Result 10043 states and 15524 transitions. [2020-10-12 19:45:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:45:53,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:45:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:45:53,045 INFO L225 Difference]: With dead ends: 10043 [2020-10-12 19:45:53,045 INFO L226 Difference]: Without dead ends: 6879 [2020-10-12 19:45:53,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:45:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6879 states. [2020-10-12 19:45:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6879 to 3237. [2020-10-12 19:45:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3237 states. [2020-10-12 19:45:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3237 states to 3237 states and 4994 transitions. [2020-10-12 19:45:53,569 INFO L78 Accepts]: Start accepts. Automaton has 3237 states and 4994 transitions. Word has length 80 [2020-10-12 19:45:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:45:53,569 INFO L479 AbstractCegarLoop]: Abstraction has 3237 states and 4994 transitions. [2020-10-12 19:45:53,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:45:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3237 states and 4994 transitions. [2020-10-12 19:45:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:45:53,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:45:53,570 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] [2020-10-12 19:45:53,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:45:53,571 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:45:53,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:45:53,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1119346954, now seen corresponding path program 1 times [2020-10-12 19:45:53,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:45:53,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481175569] [2020-10-12 19:45:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:45:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:53,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:54,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:58,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:45:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:58,833 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:45:58,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:45:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:45:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:45:58,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:45:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:45:58,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:45:58,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:45:58,867 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 19:45:58,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481175569] [2020-10-12 19:45:58,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:45:58,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:45:58,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203745093] [2020-10-12 19:45:58,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:45:58,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:45:58,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:45:58,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:45:58,869 INFO L87 Difference]: Start difference. First operand 3237 states and 4994 transitions. Second operand 7 states. [2020-10-12 19:45:59,048 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:46:00,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:00,701 INFO L93 Difference]: Finished difference Result 10903 states and 16906 transitions. [2020-10-12 19:46:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:46:00,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:46:00,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:00,710 INFO L225 Difference]: With dead ends: 10903 [2020-10-12 19:46:00,711 INFO L226 Difference]: Without dead ends: 7735 [2020-10-12 19:46:00,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:00,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2020-10-12 19:46:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 3173. [2020-10-12 19:46:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3173 states. [2020-10-12 19:46:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 4902 transitions. [2020-10-12 19:46:01,203 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 4902 transitions. Word has length 80 [2020-10-12 19:46:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:01,203 INFO L479 AbstractCegarLoop]: Abstraction has 3173 states and 4902 transitions. [2020-10-12 19:46:01,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:46:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 4902 transitions. [2020-10-12 19:46:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:46:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:01,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:01,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:46:01,206 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:01,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1244396965, now seen corresponding path program 1 times [2020-10-12 19:46:01,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:01,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103786167] [2020-10-12 19:46:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:46:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:46:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:06,421 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:46:06,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:06,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:06,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:06,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:06,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:06,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103786167] [2020-10-12 19:46:06,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:06,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:46:06,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150381127] [2020-10-12 19:46:06,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:46:06,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:06,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:46:06,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:46:06,454 INFO L87 Difference]: Start difference. First operand 3173 states and 4902 transitions. Second operand 4 states. [2020-10-12 19:46:06,630 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 19:46:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:07,898 INFO L93 Difference]: Finished difference Result 6285 states and 9752 transitions. [2020-10-12 19:46:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:46:07,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-12 19:46:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:07,903 INFO L225 Difference]: With dead ends: 6285 [2020-10-12 19:46:07,903 INFO L226 Difference]: Without dead ends: 5169 [2020-10-12 19:46:07,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:46:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2020-10-12 19:46:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5039. [2020-10-12 19:46:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5039 states. [2020-10-12 19:46:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 7775 transitions. [2020-10-12 19:46:08,659 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 7775 transitions. Word has length 110 [2020-10-12 19:46:08,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:08,659 INFO L479 AbstractCegarLoop]: Abstraction has 5039 states and 7775 transitions. [2020-10-12 19:46:08,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:46:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 7775 transitions. [2020-10-12 19:46:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:46:08,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:08,663 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:08,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:46:08,663 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash 944763586, now seen corresponding path program 1 times [2020-10-12 19:46:08,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:08,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11797229] [2020-10-12 19:46:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:46:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 19:46:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:13,916 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:46:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:13,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:13,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:13,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:13,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11797229] [2020-10-12 19:46:13,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:46:13,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 19:46:13,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732423811] [2020-10-12 19:46:13,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:46:13,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:46:13,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:46:13,964 INFO L87 Difference]: Start difference. First operand 5039 states and 7775 transitions. Second operand 8 states. [2020-10-12 19:46:14,159 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:46:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:18,847 INFO L93 Difference]: Finished difference Result 29573 states and 45637 transitions. [2020-10-12 19:46:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:46:18,847 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-12 19:46:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:18,876 INFO L225 Difference]: With dead ends: 29573 [2020-10-12 19:46:18,876 INFO L226 Difference]: Without dead ends: 24601 [2020-10-12 19:46:18,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:46:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24601 states. [2020-10-12 19:46:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24601 to 10467. [2020-10-12 19:46:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10467 states. [2020-10-12 19:46:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10467 states to 10467 states and 15929 transitions. [2020-10-12 19:46:20,650 INFO L78 Accepts]: Start accepts. Automaton has 10467 states and 15929 transitions. Word has length 112 [2020-10-12 19:46:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:20,650 INFO L479 AbstractCegarLoop]: Abstraction has 10467 states and 15929 transitions. [2020-10-12 19:46:20,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:46:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10467 states and 15929 transitions. [2020-10-12 19:46:20,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:46:20,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:20,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:20,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 19:46:20,653 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:20,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:20,654 INFO L82 PathProgramCache]: Analyzing trace with hash -52097859, now seen corresponding path program 1 times [2020-10-12 19:46:20,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:20,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518578101] [2020-10-12 19:46:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:22,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:46:25,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 19:46:25,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:25,960 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:46:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:46:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:26,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518578101] [2020-10-12 19:46:26,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:46:26,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 19:46:26,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133357874] [2020-10-12 19:46:26,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:46:26,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:26,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:46:26,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:46:26,008 INFO L87 Difference]: Start difference. First operand 10467 states and 15929 transitions. Second operand 8 states. [2020-10-12 19:46:26,198 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:46:34,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:34,249 INFO L93 Difference]: Finished difference Result 55087 states and 83465 transitions. [2020-10-12 19:46:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:46:34,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-12 19:46:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:34,294 INFO L225 Difference]: With dead ends: 55087 [2020-10-12 19:46:34,295 INFO L226 Difference]: Without dead ends: 44747 [2020-10-12 19:46:34,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:46:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44747 states. [2020-10-12 19:46:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44747 to 21721. [2020-10-12 19:46:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21721 states. [2020-10-12 19:46:37,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21721 states to 21721 states and 32611 transitions. [2020-10-12 19:46:37,927 INFO L78 Accepts]: Start accepts. Automaton has 21721 states and 32611 transitions. Word has length 112 [2020-10-12 19:46:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:37,927 INFO L479 AbstractCegarLoop]: Abstraction has 21721 states and 32611 transitions. [2020-10-12 19:46:37,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:46:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 21721 states and 32611 transitions. [2020-10-12 19:46:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:46:37,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:37,932 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:37,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 19:46:37,932 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:37,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1292224003, now seen corresponding path program 1 times [2020-10-12 19:46:37,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:37,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714860445] [2020-10-12 19:46:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:37,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:38,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:46:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:46:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:46:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:43,137 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:46:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:43,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:43,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-12 19:46:43,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714860445] [2020-10-12 19:46:43,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:46:43,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:46:43,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153982148] [2020-10-12 19:46:43,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:46:43,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:43,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:46:43,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:46:43,165 INFO L87 Difference]: Start difference. First operand 21721 states and 32611 transitions. Second operand 4 states. [2020-10-12 19:46:43,354 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:46:47,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:46:47,484 INFO L93 Difference]: Finished difference Result 34777 states and 52289 transitions. [2020-10-12 19:46:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:46:47,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-12 19:46:47,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:46:47,508 INFO L225 Difference]: With dead ends: 34777 [2020-10-12 19:46:47,508 INFO L226 Difference]: Without dead ends: 21629 [2020-10-12 19:46:47,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:46:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21629 states. [2020-10-12 19:46:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21629 to 21627. [2020-10-12 19:46:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21627 states. [2020-10-12 19:46:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21627 states to 21627 states and 32484 transitions. [2020-10-12 19:46:51,294 INFO L78 Accepts]: Start accepts. Automaton has 21627 states and 32484 transitions. Word has length 112 [2020-10-12 19:46:51,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:46:51,295 INFO L479 AbstractCegarLoop]: Abstraction has 21627 states and 32484 transitions. [2020-10-12 19:46:51,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:46:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 21627 states and 32484 transitions. [2020-10-12 19:46:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:46:51,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:46:51,298 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:46:51,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 19:46:51,299 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:46:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:46:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1521377475, now seen corresponding path program 1 times [2020-10-12 19:46:51,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:46:51,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548363704] [2020-10-12 19:46:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:46:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:46:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:46:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 19:46:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:56,710 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:46:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:46:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:46:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:46:56,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:46:56,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:46:56,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:46:56,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:46:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:46:56,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548363704] [2020-10-12 19:46:56,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:46:56,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 19:46:56,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765208090] [2020-10-12 19:46:56,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:46:56,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:46:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:46:56,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:46:56,754 INFO L87 Difference]: Start difference. First operand 21627 states and 32484 transitions. Second operand 11 states. [2020-10-12 19:46:56,985 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 19:47:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:47:26,139 INFO L93 Difference]: Finished difference Result 151950 states and 226666 transitions. [2020-10-12 19:47:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:47:26,140 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2020-10-12 19:47:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:47:26,290 INFO L225 Difference]: With dead ends: 151950 [2020-10-12 19:47:26,290 INFO L226 Difference]: Without dead ends: 130468 [2020-10-12 19:47:26,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=351, Invalid=1131, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:47:26,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130468 states.