/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-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:04:39,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:04:39,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:04:39,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:04:39,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:04:39,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:04:39,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:04:39,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:04:39,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:04:39,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:04:39,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:04:39,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:04:39,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:04:39,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:04:39,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:04:39,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:04:39,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:04:39,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:04:39,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:04:39,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:04:39,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:04:39,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:04:39,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:04:39,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:04:39,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:04:39,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:04:39,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:04:39,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:04:39,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:04:39,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:04:39,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:04:39,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:04:39,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:04:39,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:04:39,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:04:39,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:04:39,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:04:39,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:04:39,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:04:39,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:04:39,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:04:39,968 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 20:04:40,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:04:40,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:04:40,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:04:40,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:04:40,015 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:04:40,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:04:40,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:04:40,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:04:40,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:04:40,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:04:40,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:04:40,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:04:40,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:04:40,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:04:40,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:04:40,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:04:40,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:04:40,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:04:40,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:04:40,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:04:40,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:04:40,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:04:40,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:04:40,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:04:40,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:04:40,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:04:40,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:04:40,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:04:40,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:04:40,023 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 20:04:40,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:04:40,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:04:40,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:04:40,375 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:04:40,376 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:04:40,376 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:04:40,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740442e91/a48bd8f77a0447c0b3921cc16c284ce2/FLAG29700cf91 [2020-10-12 20:04:40,971 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:04:40,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:04:40,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740442e91/a48bd8f77a0447c0b3921cc16c284ce2/FLAG29700cf91 [2020-10-12 20:04:41,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/740442e91/a48bd8f77a0447c0b3921cc16c284ce2 [2020-10-12 20:04:41,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:04:41,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:04:41,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:04:41,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:04:41,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:04:41,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@284e4e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41, skipping insertion in model container [2020-10-12 20:04:41,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:04:41,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:04:41,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:04:41,720 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:04:41,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:04:41,819 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:04:41,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41 WrapperNode [2020-10-12 20:04:41,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:04:41,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:04:41,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:04:41,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:04:41,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (1/1) ... [2020-10-12 20:04:41,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:04:41,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:04:41,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:04:41,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:04:41,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (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 20:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:04:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:04:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:04:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:04:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:04:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:04:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:04:42,674 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:04:42,675 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:04:42,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:04:42 BoogieIcfgContainer [2020-10-12 20:04:42,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:04:42,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:04:42,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:04:42,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:04:42,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:04:41" (1/3) ... [2020-10-12 20:04:42,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf52ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:04:42, skipping insertion in model container [2020-10-12 20:04:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:04:41" (2/3) ... [2020-10-12 20:04:42,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cf52ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:04:42, skipping insertion in model container [2020-10-12 20:04:42,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:04:42" (3/3) ... [2020-10-12 20:04:42,689 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:04:42,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:04:42,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:04:42,723 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:04:42,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:04:42,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:04:42,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:04:42,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:04:42,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:04:42,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:04:42,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:04:42,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:04:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states. [2020-10-12 20:04:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 20:04:42,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:42,789 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] [2020-10-12 20:04:42,790 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:42,800 INFO L82 PathProgramCache]: Analyzing trace with hash -153114197, now seen corresponding path program 1 times [2020-10-12 20:04:42,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:42,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516748738] [2020-10-12 20:04:42,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:43,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:44,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:45,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:48,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:48,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 20:04:48,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:04:48,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:04:48,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:04:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:04:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 20:04:48,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:04:48,498 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:04:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:48,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:48,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:48,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:48,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:04:48,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:48,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:48,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:48,553 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 20:04:48,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516748738] [2020-10-12 20:04:48,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:48,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:04:48,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287579823] [2020-10-12 20:04:48,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:04:48,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:48,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:04:48,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:04:48,583 INFO L87 Difference]: Start difference. First operand 141 states. Second operand 8 states. [2020-10-12 20:04:48,938 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 20:04:49,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:49,786 INFO L93 Difference]: Finished difference Result 753 states and 1199 transitions. [2020-10-12 20:04:49,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:04:49,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-10-12 20:04:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:49,809 INFO L225 Difference]: With dead ends: 753 [2020-10-12 20:04:49,809 INFO L226 Difference]: Without dead ends: 627 [2020-10-12 20:04:49,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:04:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-10-12 20:04:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 233. [2020-10-12 20:04:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-12 20:04:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2020-10-12 20:04:49,926 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 64 [2020-10-12 20:04:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:49,927 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2020-10-12 20:04:49,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:04:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2020-10-12 20:04:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 20:04:49,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:49,940 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] [2020-10-12 20:04:49,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:04:49,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:49,941 INFO L82 PathProgramCache]: Analyzing trace with hash -470105524, now seen corresponding path program 1 times [2020-10-12 20:04:49,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:49,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342986927] [2020-10-12 20:04:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:50,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:51,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:53,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 20:04:53,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:04:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3919 [2020-10-12 20:04:53,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:04:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 20:04:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 20:04:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:54,184 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:04:54,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:54,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:54,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:54,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:54,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:54,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 20:04:54,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:54,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:54,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:04:54,254 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 20:04:54,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342986927] [2020-10-12 20:04:54,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:54,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:04:54,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011036290] [2020-10-12 20:04:54,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:04:54,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:54,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:04:54,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:04:54,260 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 5 states. [2020-10-12 20:04:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:55,176 INFO L93 Difference]: Finished difference Result 431 states and 661 transitions. [2020-10-12 20:04:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:04:55,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-12 20:04:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:55,179 INFO L225 Difference]: With dead ends: 431 [2020-10-12 20:04:55,180 INFO L226 Difference]: Without dead ends: 429 [2020-10-12 20:04:55,181 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 20:04:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-10-12 20:04:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 237. [2020-10-12 20:04:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-10-12 20:04:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 352 transitions. [2020-10-12 20:04:55,202 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 352 transitions. Word has length 65 [2020-10-12 20:04:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:55,202 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 352 transitions. [2020-10-12 20:04:55,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:04:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 352 transitions. [2020-10-12 20:04:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 20:04:55,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:55,204 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] [2020-10-12 20:04:55,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:04:55,205 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1678749574, now seen corresponding path program 1 times [2020-10-12 20:04:55,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:55,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952618076] [2020-10-12 20:04:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:55,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:57,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:57,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 20:04:57,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:04:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2641 [2020-10-12 20:04:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:04:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:04:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:04:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:58,112 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:04:58,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:04:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:58,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:04:58,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:04:58,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:04:58,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:04:58,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:04:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:04:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:04:58,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:04:58,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:04:58,171 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 20:04:58,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952618076] [2020-10-12 20:04:58,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:04:58,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:04:58,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816780250] [2020-10-12 20:04:58,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:04:58,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:04:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:04:58,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:04:58,180 INFO L87 Difference]: Start difference. First operand 237 states and 352 transitions. Second operand 5 states. [2020-10-12 20:04:58,377 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 20:04:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:04:59,195 INFO L93 Difference]: Finished difference Result 813 states and 1261 transitions. [2020-10-12 20:04:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:04:59,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-10-12 20:04:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:04:59,202 INFO L225 Difference]: With dead ends: 813 [2020-10-12 20:04:59,203 INFO L226 Difference]: Without dead ends: 615 [2020-10-12 20:04:59,206 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 20:04:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-10-12 20:04:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 611. [2020-10-12 20:04:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-12 20:04:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 942 transitions. [2020-10-12 20:04:59,253 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 942 transitions. Word has length 66 [2020-10-12 20:04:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:04:59,253 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 942 transitions. [2020-10-12 20:04:59,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:04:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 942 transitions. [2020-10-12 20:04:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:04:59,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:04:59,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:04:59,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:04:59,257 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:04:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:04:59,258 INFO L82 PathProgramCache]: Analyzing trace with hash -28348772, now seen corresponding path program 1 times [2020-10-12 20:04:59,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:04:59,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417513518] [2020-10-12 20:04:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:04:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:04:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:59,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:04:59,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:02,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:04,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:04,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:05:04,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:05:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:05:04,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 20:05:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:05:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:05:04,500 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:04,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:04,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:04,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:04,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:05:04,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:04,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:04,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:04,541 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 20:05:04,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417513518] [2020-10-12 20:05:04,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:04,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:04,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994540252] [2020-10-12 20:05:04,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:04,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:04,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:04,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:04,544 INFO L87 Difference]: Start difference. First operand 611 states and 942 transitions. Second operand 8 states. [2020-10-12 20:05:04,782 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:05:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:06,017 INFO L93 Difference]: Finished difference Result 3224 states and 5092 transitions. [2020-10-12 20:05:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:05:06,018 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 20:05:06,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:06,037 INFO L225 Difference]: With dead ends: 3224 [2020-10-12 20:05:06,037 INFO L226 Difference]: Without dead ends: 2935 [2020-10-12 20:05:06,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:05:06,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2020-10-12 20:05:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1073. [2020-10-12 20:05:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-10-12 20:05:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1675 transitions. [2020-10-12 20:05:06,137 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1675 transitions. Word has length 67 [2020-10-12 20:05:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:06,137 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1675 transitions. [2020-10-12 20:05:06,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1675 transitions. [2020-10-12 20:05:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:05:06,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:06,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:06,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:05:06,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1528246052, now seen corresponding path program 1 times [2020-10-12 20:05:06,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:06,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321611857] [2020-10-12 20:05:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:06,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:08,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:11,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:11,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:05:11,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:05:11,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:05:11,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:05:11,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:05:11,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:11,397 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:11,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:11,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:05:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:11,458 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 20:05:11,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321611857] [2020-10-12 20:05:11,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:11,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:11,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648111914] [2020-10-12 20:05:11,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:11,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:11,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:11,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:11,461 INFO L87 Difference]: Start difference. First operand 1073 states and 1675 transitions. Second operand 8 states. [2020-10-12 20:05:11,729 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:05:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:13,081 INFO L93 Difference]: Finished difference Result 3858 states and 6083 transitions. [2020-10-12 20:05:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:05:13,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 20:05:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:13,099 INFO L225 Difference]: With dead ends: 3858 [2020-10-12 20:05:13,100 INFO L226 Difference]: Without dead ends: 3296 [2020-10-12 20:05:13,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:05:13,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3296 states. [2020-10-12 20:05:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 1356. [2020-10-12 20:05:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2020-10-12 20:05:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 2122 transitions. [2020-10-12 20:05:13,238 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 2122 transitions. Word has length 67 [2020-10-12 20:05:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:13,239 INFO L479 AbstractCegarLoop]: Abstraction has 1356 states and 2122 transitions. [2020-10-12 20:05:13,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 2122 transitions. [2020-10-12 20:05:13,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:05:13,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:13,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:13,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:05:13,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:13,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:13,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1288270395, now seen corresponding path program 1 times [2020-10-12 20:05:13,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:13,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333223599] [2020-10-12 20:05:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:13,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:13,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:14,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:18,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:18,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:05:18,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:05:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:05:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:05:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:05:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:18,505 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:18,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:18,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:05:18,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:18,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:18,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:18,552 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 20:05:18,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333223599] [2020-10-12 20:05:18,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:18,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:18,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131537927] [2020-10-12 20:05:18,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:18,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:18,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:18,557 INFO L87 Difference]: Start difference. First operand 1356 states and 2122 transitions. Second operand 8 states. [2020-10-12 20:05:18,813 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:05:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:20,107 INFO L93 Difference]: Finished difference Result 4204 states and 6626 transitions. [2020-10-12 20:05:20,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:05:20,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 20:05:20,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:20,139 INFO L225 Difference]: With dead ends: 4204 [2020-10-12 20:05:20,139 INFO L226 Difference]: Without dead ends: 3642 [2020-10-12 20:05:20,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:05:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3642 states. [2020-10-12 20:05:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3642 to 1639. [2020-10-12 20:05:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-12 20:05:20,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2569 transitions. [2020-10-12 20:05:20,305 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2569 transitions. Word has length 67 [2020-10-12 20:05:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:20,305 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2569 transitions. [2020-10-12 20:05:20,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2569 transitions. [2020-10-12 20:05:20,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:05:20,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:20,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:20,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:05:20,308 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:20,308 INFO L82 PathProgramCache]: Analyzing trace with hash 801434564, now seen corresponding path program 1 times [2020-10-12 20:05:20,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:20,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595392738] [2020-10-12 20:05:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:25,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:25,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:05:25,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:05:25,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:05:25,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:05:25,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:05:25,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:25,611 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:25,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:25,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:25,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:25,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:25,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:05:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:25,638 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 20:05:25,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595392738] [2020-10-12 20:05:25,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:25,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:25,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127194381] [2020-10-12 20:05:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:25,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:25,641 INFO L87 Difference]: Start difference. First operand 1639 states and 2569 transitions. Second operand 8 states. [2020-10-12 20:05:25,842 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:05:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:26,654 INFO L93 Difference]: Finished difference Result 4330 states and 6817 transitions. [2020-10-12 20:05:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:05:26,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 20:05:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:26,675 INFO L225 Difference]: With dead ends: 4330 [2020-10-12 20:05:26,675 INFO L226 Difference]: Without dead ends: 3768 [2020-10-12 20:05:26,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:05:26,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2020-10-12 20:05:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 1922. [2020-10-12 20:05:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1922 states. [2020-10-12 20:05:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 3016 transitions. [2020-10-12 20:05:26,830 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 3016 transitions. Word has length 67 [2020-10-12 20:05:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:26,831 INFO L479 AbstractCegarLoop]: Abstraction has 1922 states and 3016 transitions. [2020-10-12 20:05:26,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:26,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 3016 transitions. [2020-10-12 20:05:26,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 20:05:26,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:26,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:05:26,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:05:26,833 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:26,833 INFO L82 PathProgramCache]: Analyzing trace with hash -634061401, now seen corresponding path program 1 times [2020-10-12 20:05:26,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:26,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336295359] [2020-10-12 20:05:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:26,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:31,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:31,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 20:05:31,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:05:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:05:31,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:05:31,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:05:31,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:32,065 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:32,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:32,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:32,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:32,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:32,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:32,091 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 20:05:32,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336295359] [2020-10-12 20:05:32,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:32,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:32,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991101494] [2020-10-12 20:05:32,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:32,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:32,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:32,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:32,093 INFO L87 Difference]: Start difference. First operand 1922 states and 3016 transitions. Second operand 8 states. [2020-10-12 20:05:32,298 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 20:05:33,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:33,543 INFO L93 Difference]: Finished difference Result 4950 states and 7799 transitions. [2020-10-12 20:05:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:05:33,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-12 20:05:33,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:33,565 INFO L225 Difference]: With dead ends: 4950 [2020-10-12 20:05:33,565 INFO L226 Difference]: Without dead ends: 4388 [2020-10-12 20:05:33,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:05:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2020-10-12 20:05:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 2205. [2020-10-12 20:05:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-10-12 20:05:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3463 transitions. [2020-10-12 20:05:33,780 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3463 transitions. Word has length 67 [2020-10-12 20:05:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:33,781 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 3463 transitions. [2020-10-12 20:05:33,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3463 transitions. [2020-10-12 20:05:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:05:33,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:33,783 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] [2020-10-12 20:05:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:05:33,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:33,784 INFO L82 PathProgramCache]: Analyzing trace with hash 211819083, now seen corresponding path program 1 times [2020-10-12 20:05:33,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:33,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083205067] [2020-10-12 20:05:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:33,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:33,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:33,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:38,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:38,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:05:38,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:05:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:39,054 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:39,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:39,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:39,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:05:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:39,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:39,099 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 20:05:39,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083205067] [2020-10-12 20:05:39,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:39,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:39,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193692243] [2020-10-12 20:05:39,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:39,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:39,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:39,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:39,103 INFO L87 Difference]: Start difference. First operand 2205 states and 3463 transitions. Second operand 8 states. [2020-10-12 20:05:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:40,983 INFO L93 Difference]: Finished difference Result 4844 states and 7595 transitions. [2020-10-12 20:05:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:05:40,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:05:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:41,025 INFO L225 Difference]: With dead ends: 4844 [2020-10-12 20:05:41,026 INFO L226 Difference]: Without dead ends: 4471 [2020-10-12 20:05:41,028 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 20:05:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2020-10-12 20:05:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 2243. [2020-10-12 20:05:41,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-10-12 20:05:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3525 transitions. [2020-10-12 20:05:41,206 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3525 transitions. Word has length 70 [2020-10-12 20:05:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:41,206 INFO L479 AbstractCegarLoop]: Abstraction has 2243 states and 3525 transitions. [2020-10-12 20:05:41,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3525 transitions. [2020-10-12 20:05:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:05:41,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:41,209 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] [2020-10-12 20:05:41,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:05:41,209 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:41,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1266631766, now seen corresponding path program 1 times [2020-10-12 20:05:41,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:41,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869640287] [2020-10-12 20:05:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:41,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:41,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:46,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:46,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:05:46,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:05:46,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:46,453 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:46,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:46,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:05:46,486 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 20:05:46,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869640287] [2020-10-12 20:05:46,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:46,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:46,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172721076] [2020-10-12 20:05:46,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:46,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:46,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:46,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:46,489 INFO L87 Difference]: Start difference. First operand 2243 states and 3525 transitions. Second operand 8 states. [2020-10-12 20:05:48,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:48,198 INFO L93 Difference]: Finished difference Result 4896 states and 7673 transitions. [2020-10-12 20:05:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:05:48,199 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:05:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:48,210 INFO L225 Difference]: With dead ends: 4896 [2020-10-12 20:05:48,210 INFO L226 Difference]: Without dead ends: 4523 [2020-10-12 20:05:48,213 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 20:05:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4523 states. [2020-10-12 20:05:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4523 to 2279. [2020-10-12 20:05:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-10-12 20:05:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3581 transitions. [2020-10-12 20:05:48,386 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3581 transitions. Word has length 70 [2020-10-12 20:05:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:48,386 INFO L479 AbstractCegarLoop]: Abstraction has 2279 states and 3581 transitions. [2020-10-12 20:05:48,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3581 transitions. [2020-10-12 20:05:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:05:48,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:48,389 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] [2020-10-12 20:05:48,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:05:48,390 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:48,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1753467597, now seen corresponding path program 1 times [2020-10-12 20:05:48,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:48,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301597018] [2020-10-12 20:05:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:48,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:50,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:53,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:53,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:05:53,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4800 [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 20:05:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:53,400 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:05:53,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:05:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:53,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:05:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:05:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:05:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:05:53,426 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 20:05:53,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301597018] [2020-10-12 20:05:53,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:05:53,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:05:53,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987880986] [2020-10-12 20:05:53,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:05:53,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:05:53,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:05:53,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:05:53,428 INFO L87 Difference]: Start difference. First operand 2279 states and 3581 transitions. Second operand 8 states. [2020-10-12 20:05:55,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:05:55,120 INFO L93 Difference]: Finished difference Result 4922 states and 7711 transitions. [2020-10-12 20:05:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:05:55,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:05:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:05:55,130 INFO L225 Difference]: With dead ends: 4922 [2020-10-12 20:05:55,130 INFO L226 Difference]: Without dead ends: 4549 [2020-10-12 20:05:55,134 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 20:05:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2020-10-12 20:05:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 2315. [2020-10-12 20:05:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2315 states. [2020-10-12 20:05:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3637 transitions. [2020-10-12 20:05:55,335 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3637 transitions. Word has length 70 [2020-10-12 20:05:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:05:55,335 INFO L479 AbstractCegarLoop]: Abstraction has 2315 states and 3637 transitions. [2020-10-12 20:05:55,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:05:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3637 transitions. [2020-10-12 20:05:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:05:55,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:05:55,338 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] [2020-10-12 20:05:55,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:05:55,338 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:05:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:05:55,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1106003734, now seen corresponding path program 1 times [2020-10-12 20:05:55,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:05:55,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728246142] [2020-10-12 20:05:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:05:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:05:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:05:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:00,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:00,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:00,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:06:00,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 20:06:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:06:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:00,556 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:00,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:00,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:00,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:00,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:00,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:06:00,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:00,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:00,577 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 20:06:00,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728246142] [2020-10-12 20:06:00,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:00,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:00,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349238391] [2020-10-12 20:06:00,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:00,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:00,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:00,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:00,579 INFO L87 Difference]: Start difference. First operand 2315 states and 3637 transitions. Second operand 8 states. [2020-10-12 20:06:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:02,428 INFO L93 Difference]: Finished difference Result 4849 states and 7598 transitions. [2020-10-12 20:06:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:02,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:02,438 INFO L225 Difference]: With dead ends: 4849 [2020-10-12 20:06:02,438 INFO L226 Difference]: Without dead ends: 4433 [2020-10-12 20:06:02,442 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 20:06:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2020-10-12 20:06:02,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2272. [2020-10-12 20:06:02,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2272 states. [2020-10-12 20:06:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3569 transitions. [2020-10-12 20:06:02,696 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3569 transitions. Word has length 70 [2020-10-12 20:06:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:02,696 INFO L479 AbstractCegarLoop]: Abstraction has 2272 states and 3569 transitions. [2020-10-12 20:06:02,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3569 transitions. [2020-10-12 20:06:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:02,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:02,702 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] [2020-10-12 20:06:02,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:06:02,702 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash 133247338, now seen corresponding path program 1 times [2020-10-12 20:06:02,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:02,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379597149] [2020-10-12 20:06:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:03,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:03,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:07,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 20:06:07,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:06:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:07,936 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:07,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:07,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:07,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:07,956 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 20:06:07,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379597149] [2020-10-12 20:06:07,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:07,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:07,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4941783] [2020-10-12 20:06:07,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:07,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:07,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:07,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:07,958 INFO L87 Difference]: Start difference. First operand 2272 states and 3569 transitions. Second operand 8 states. [2020-10-12 20:06:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:09,461 INFO L93 Difference]: Finished difference Result 5232 states and 8199 transitions. [2020-10-12 20:06:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:09,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:09,470 INFO L225 Difference]: With dead ends: 5232 [2020-10-12 20:06:09,471 INFO L226 Difference]: Without dead ends: 4670 [2020-10-12 20:06:09,474 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 20:06:09,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2020-10-12 20:06:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 2374. [2020-10-12 20:06:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2374 states. [2020-10-12 20:06:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3735 transitions. [2020-10-12 20:06:09,761 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3735 transitions. Word has length 70 [2020-10-12 20:06:09,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:09,762 INFO L479 AbstractCegarLoop]: Abstraction has 2374 states and 3735 transitions. [2020-10-12 20:06:09,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:09,762 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3735 transitions. [2020-10-12 20:06:09,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:09,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:09,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:06:09,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:06:09,766 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:09,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:09,766 INFO L82 PathProgramCache]: Analyzing trace with hash -353588493, now seen corresponding path program 1 times [2020-10-12 20:06:09,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:09,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417173555] [2020-10-12 20:06:09,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:09,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:09,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:09,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:10,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:11,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:14,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:14,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:14,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:14,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:06:14,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 20:06:14,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 20:06:14,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:14,969 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:14,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:14,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:14,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:14,989 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 20:06:14,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417173555] [2020-10-12 20:06:14,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:14,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:14,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001459544] [2020-10-12 20:06:14,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:14,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:14,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:14,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:14,991 INFO L87 Difference]: Start difference. First operand 2374 states and 3735 transitions. Second operand 8 states. [2020-10-12 20:06:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:16,494 INFO L93 Difference]: Finished difference Result 5322 states and 8333 transitions. [2020-10-12 20:06:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:16,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:16,506 INFO L225 Difference]: With dead ends: 5322 [2020-10-12 20:06:16,506 INFO L226 Difference]: Without dead ends: 4760 [2020-10-12 20:06:16,514 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 20:06:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2020-10-12 20:06:16,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 2446. [2020-10-12 20:06:16,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-10-12 20:06:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3847 transitions. [2020-10-12 20:06:16,824 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3847 transitions. Word has length 70 [2020-10-12 20:06:16,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:16,824 INFO L479 AbstractCegarLoop]: Abstraction has 2446 states and 3847 transitions. [2020-10-12 20:06:16,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3847 transitions. [2020-10-12 20:06:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:16,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:16,829 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] [2020-10-12 20:06:16,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:06:16,829 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash 6789428, now seen corresponding path program 1 times [2020-10-12 20:06:16,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:16,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882825897] [2020-10-12 20:06:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:16,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:17,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:18,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:21,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4859 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 20:06:21,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:06:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:21,899 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:21,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:21,921 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 20:06:21,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882825897] [2020-10-12 20:06:21,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:21,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:21,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653550796] [2020-10-12 20:06:21,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:21,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:21,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:21,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:21,922 INFO L87 Difference]: Start difference. First operand 2446 states and 3847 transitions. Second operand 8 states. [2020-10-12 20:06:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:23,297 INFO L93 Difference]: Finished difference Result 5244 states and 8213 transitions. [2020-10-12 20:06:23,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:23,297 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:23,310 INFO L225 Difference]: With dead ends: 5244 [2020-10-12 20:06:23,310 INFO L226 Difference]: Without dead ends: 4682 [2020-10-12 20:06:23,313 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 20:06:23,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4682 states. [2020-10-12 20:06:23,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4682 to 2532. [2020-10-12 20:06:23,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2532 states. [2020-10-12 20:06:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3985 transitions. [2020-10-12 20:06:23,682 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3985 transitions. Word has length 70 [2020-10-12 20:06:23,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:23,682 INFO L479 AbstractCegarLoop]: Abstraction has 2532 states and 3985 transitions. [2020-10-12 20:06:23,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:23,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3985 transitions. [2020-10-12 20:06:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:23,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:23,685 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] [2020-10-12 20:06:23,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:06:23,686 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:23,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:23,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1415500960, now seen corresponding path program 1 times [2020-10-12 20:06:23,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:23,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439181954] [2020-10-12 20:06:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:23,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:23,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:23,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:24,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:24,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-12 20:06:28,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 20:06:28,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:28,907 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:28,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:28,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:28,927 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 20:06:28,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439181954] [2020-10-12 20:06:28,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:28,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:28,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665287796] [2020-10-12 20:06:28,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:28,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:28,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:28,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:28,929 INFO L87 Difference]: Start difference. First operand 2532 states and 3985 transitions. Second operand 8 states. [2020-10-12 20:06:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:30,701 INFO L93 Difference]: Finished difference Result 5422 states and 8503 transitions. [2020-10-12 20:06:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:30,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:30,706 INFO L225 Difference]: With dead ends: 5422 [2020-10-12 20:06:30,707 INFO L226 Difference]: Without dead ends: 4810 [2020-10-12 20:06:30,709 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 20:06:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2020-10-12 20:06:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 2496. [2020-10-12 20:06:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-10-12 20:06:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3927 transitions. [2020-10-12 20:06:30,964 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3927 transitions. Word has length 70 [2020-10-12 20:06:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:30,964 INFO L479 AbstractCegarLoop]: Abstraction has 2496 states and 3927 transitions. [2020-10-12 20:06:30,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3927 transitions. [2020-10-12 20:06:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:30,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:30,967 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] [2020-10-12 20:06:30,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:06:30,967 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:30,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1401015487, now seen corresponding path program 1 times [2020-10-12 20:06:30,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:30,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250669706] [2020-10-12 20:06:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 20:06:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 20:06:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:36,189 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:36,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:36,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:36,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:36,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:36,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:06:36,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:36,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:36,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:36,209 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 20:06:36,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250669706] [2020-10-12 20:06:36,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:36,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:36,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150283128] [2020-10-12 20:06:36,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:36,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:36,211 INFO L87 Difference]: Start difference. First operand 2496 states and 3927 transitions. Second operand 8 states. [2020-10-12 20:06:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:38,067 INFO L93 Difference]: Finished difference Result 5282 states and 8277 transitions. [2020-10-12 20:06:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:38,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:38,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:38,073 INFO L225 Difference]: With dead ends: 5282 [2020-10-12 20:06:38,073 INFO L226 Difference]: Without dead ends: 4706 [2020-10-12 20:06:38,075 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 20:06:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4706 states. [2020-10-12 20:06:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4706 to 2482. [2020-10-12 20:06:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2482 states. [2020-10-12 20:06:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3903 transitions. [2020-10-12 20:06:38,297 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3903 transitions. Word has length 70 [2020-10-12 20:06:38,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:38,298 INFO L479 AbstractCegarLoop]: Abstraction has 2482 states and 3903 transitions. [2020-10-12 20:06:38,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3903 transitions. [2020-10-12 20:06:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 20:06:38,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:38,300 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] [2020-10-12 20:06:38,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:06:38,300 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:38,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash 914179656, now seen corresponding path program 1 times [2020-10-12 20:06:38,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:38,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226962938] [2020-10-12 20:06:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:43,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 20:06:43,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:06:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:43,507 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:43,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:43,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:06:43,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:43,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:43,533 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 20:06:43,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226962938] [2020-10-12 20:06:43,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:43,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:06:43,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275790239] [2020-10-12 20:06:43,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:06:43,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:06:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:43,535 INFO L87 Difference]: Start difference. First operand 2482 states and 3903 transitions. Second operand 8 states. [2020-10-12 20:06:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:45,229 INFO L93 Difference]: Finished difference Result 5260 states and 8239 transitions. [2020-10-12 20:06:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 20:06:45,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-12 20:06:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:45,234 INFO L225 Difference]: With dead ends: 5260 [2020-10-12 20:06:45,234 INFO L226 Difference]: Without dead ends: 4698 [2020-10-12 20:06:45,239 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 20:06:45,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2020-10-12 20:06:45,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 2518. [2020-10-12 20:06:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2020-10-12 20:06:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3959 transitions. [2020-10-12 20:06:45,470 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3959 transitions. Word has length 70 [2020-10-12 20:06:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:45,470 INFO L479 AbstractCegarLoop]: Abstraction has 2518 states and 3959 transitions. [2020-10-12 20:06:45,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:06:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3959 transitions. [2020-10-12 20:06:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 20:06:45,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:45,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:45,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:06:45,476 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1333069141, now seen corresponding path program 1 times [2020-10-12 20:06:45,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:45,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324302455] [2020-10-12 20:06:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:45,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:46,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:50,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 20:06:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 20:06:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:50,672 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:50,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:50,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:50,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:50,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:50,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:50,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:06:50,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:50,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 20:06:50,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324302455] [2020-10-12 20:06:50,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:06:50,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:06:50,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119304500] [2020-10-12 20:06:50,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:06:50,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:50,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:06:50,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:06:50,705 INFO L87 Difference]: Start difference. First operand 2518 states and 3959 transitions. Second operand 4 states. [2020-10-12 20:06:50,885 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 20:06:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:51,779 INFO L93 Difference]: Finished difference Result 6482 states and 10209 transitions. [2020-10-12 20:06:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:06:51,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-12 20:06:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:51,785 INFO L225 Difference]: With dead ends: 6482 [2020-10-12 20:06:51,785 INFO L226 Difference]: Without dead ends: 4288 [2020-10-12 20:06:51,790 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 20:06:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2020-10-12 20:06:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 4174. [2020-10-12 20:06:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4174 states. [2020-10-12 20:06:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4174 states to 4174 states and 6541 transitions. [2020-10-12 20:06:52,160 INFO L78 Accepts]: Start accepts. Automaton has 4174 states and 6541 transitions. Word has length 91 [2020-10-12 20:06:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:52,160 INFO L479 AbstractCegarLoop]: Abstraction has 4174 states and 6541 transitions. [2020-10-12 20:06:52,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:06:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4174 states and 6541 transitions. [2020-10-12 20:06:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 20:06:52,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:52,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:52,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 20:06:52,165 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash 336649969, now seen corresponding path program 1 times [2020-10-12 20:06:52,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:52,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83743089] [2020-10-12 20:06:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:57,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 20:06:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 20:06:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:57,453 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:06:57,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:06:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:57,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:06:57,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:06:57,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:06:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:06:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:06:57,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83743089] [2020-10-12 20:06:57,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:06:57,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 20:06:57,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758288179] [2020-10-12 20:06:57,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:06:57,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:06:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:06:57,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:06:57,497 INFO L87 Difference]: Start difference. First operand 4174 states and 6541 transitions. Second operand 6 states. [2020-10-12 20:06:57,670 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 20:06:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:06:59,026 INFO L93 Difference]: Finished difference Result 7004 states and 11013 transitions. [2020-10-12 20:06:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:06:59,027 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2020-10-12 20:06:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:06:59,037 INFO L225 Difference]: With dead ends: 7004 [2020-10-12 20:06:59,037 INFO L226 Difference]: Without dead ends: 5570 [2020-10-12 20:06:59,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:06:59,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2020-10-12 20:06:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5564. [2020-10-12 20:06:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5564 states. [2020-10-12 20:06:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 8727 transitions. [2020-10-12 20:06:59,528 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 8727 transitions. Word has length 92 [2020-10-12 20:06:59,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:06:59,528 INFO L479 AbstractCegarLoop]: Abstraction has 5564 states and 8727 transitions. [2020-10-12 20:06:59,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:06:59,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 8727 transitions. [2020-10-12 20:06:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:06:59,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:06:59,531 INFO L422 BasicCegarLoop]: trace histogram [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 20:06:59,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 20:06:59,532 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:06:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:06:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash -910270988, now seen corresponding path program 1 times [2020-10-12 20:06:59,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:06:59,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980855496] [2020-10-12 20:06:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:06:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:06:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:59,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:06:59,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:00,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:00,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:04,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:07:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:07:04,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:07:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:07:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:07:04,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:04,748 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:04,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:04,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:04,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:04,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:07:04,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:04,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980855496] [2020-10-12 20:07:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:07:04,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:07:04,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545038632] [2020-10-12 20:07:04,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:07:04,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:07:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:04,780 INFO L87 Difference]: Start difference. First operand 5564 states and 8727 transitions. Second operand 9 states. [2020-10-12 20:07:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:08,297 INFO L93 Difference]: Finished difference Result 11797 states and 18379 transitions. [2020-10-12 20:07:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:08,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:07:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:08,309 INFO L225 Difference]: With dead ends: 11797 [2020-10-12 20:07:08,309 INFO L226 Difference]: Without dead ends: 10771 [2020-10-12 20:07:08,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2020-10-12 20:07:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 5699. [2020-10-12 20:07:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5699 states. [2020-10-12 20:07:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 8937 transitions. [2020-10-12 20:07:08,849 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 8937 transitions. Word has length 96 [2020-10-12 20:07:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:08,849 INFO L479 AbstractCegarLoop]: Abstraction has 5699 states and 8937 transitions. [2020-10-12 20:07:08,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:07:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 8937 transitions. [2020-10-12 20:07:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:08,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:08,853 INFO L422 BasicCegarLoop]: trace histogram [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 20:07:08,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 20:07:08,853 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:08,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1906245459, now seen corresponding path program 1 times [2020-10-12 20:07:08,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:08,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635934951] [2020-10-12 20:07:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:08,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:08,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:09,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 20:07:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:14,075 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:14,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:14,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:14,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:14,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635934951] [2020-10-12 20:07:14,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:07:14,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:07:14,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227017009] [2020-10-12 20:07:14,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:07:14,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:14,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:07:14,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:14,099 INFO L87 Difference]: Start difference. First operand 5699 states and 8937 transitions. Second operand 9 states. [2020-10-12 20:07:17,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:17,599 INFO L93 Difference]: Finished difference Result 12190 states and 18990 transitions. [2020-10-12 20:07:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:17,601 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:07:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:17,616 INFO L225 Difference]: With dead ends: 12190 [2020-10-12 20:07:17,616 INFO L226 Difference]: Without dead ends: 11164 [2020-10-12 20:07:17,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2020-10-12 20:07:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 6005. [2020-10-12 20:07:18,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6005 states. [2020-10-12 20:07:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 9417 transitions. [2020-10-12 20:07:18,196 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 9417 transitions. Word has length 96 [2020-10-12 20:07:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:18,196 INFO L479 AbstractCegarLoop]: Abstraction has 6005 states and 9417 transitions. [2020-10-12 20:07:18,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:07:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 9417 transitions. [2020-10-12 20:07:18,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:18,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:18,200 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:07:18,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 20:07:18,201 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:18,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1419409628, now seen corresponding path program 1 times [2020-10-12 20:07:18,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:18,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44789640] [2020-10-12 20:07:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:18,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 20:07:23,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:23,406 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:23,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:23,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 20:07:23,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44789640] [2020-10-12 20:07:23,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:23,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:07:23,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867434767] [2020-10-12 20:07:23,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:07:23,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:23,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:07:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:07:23,438 INFO L87 Difference]: Start difference. First operand 6005 states and 9417 transitions. Second operand 7 states. [2020-10-12 20:07:23,616 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 20:07:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:25,470 INFO L93 Difference]: Finished difference Result 14094 states and 22119 transitions. [2020-10-12 20:07:25,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:07:25,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 20:07:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:25,485 INFO L225 Difference]: With dead ends: 14094 [2020-10-12 20:07:25,486 INFO L226 Difference]: Without dead ends: 12066 [2020-10-12 20:07:25,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:07:25,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12066 states. [2020-10-12 20:07:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12066 to 5521. [2020-10-12 20:07:26,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5521 states. [2020-10-12 20:07:26,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5521 states to 5521 states and 8659 transitions. [2020-10-12 20:07:26,122 INFO L78 Accepts]: Start accepts. Automaton has 5521 states and 8659 transitions. Word has length 96 [2020-10-12 20:07:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:26,122 INFO L479 AbstractCegarLoop]: Abstraction has 5521 states and 8659 transitions. [2020-10-12 20:07:26,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:07:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5521 states and 8659 transitions. [2020-10-12 20:07:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:26,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:26,126 INFO L422 BasicCegarLoop]: trace histogram [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 20:07:26,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 20:07:26,126 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 336183668, now seen corresponding path program 2 times [2020-10-12 20:07:26,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:26,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219121657] [2020-10-12 20:07:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:26,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:31,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:07:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 20:07:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:07:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:07:31,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 20:07:31,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:31,355 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:31,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:31,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:31,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:07:31,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:31,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219121657] [2020-10-12 20:07:31,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:07:31,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:07:31,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098402159] [2020-10-12 20:07:31,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:07:31,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:31,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:07:31,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:31,383 INFO L87 Difference]: Start difference. First operand 5521 states and 8659 transitions. Second operand 9 states. [2020-10-12 20:07:34,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:34,289 INFO L93 Difference]: Finished difference Result 10788 states and 16829 transitions. [2020-10-12 20:07:34,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:34,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:07:34,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:34,301 INFO L225 Difference]: With dead ends: 10788 [2020-10-12 20:07:34,301 INFO L226 Difference]: Without dead ends: 9761 [2020-10-12 20:07:34,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:34,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2020-10-12 20:07:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 5577. [2020-10-12 20:07:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5577 states. [2020-10-12 20:07:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5577 states to 5577 states and 8739 transitions. [2020-10-12 20:07:35,029 INFO L78 Accepts]: Start accepts. Automaton has 5577 states and 8739 transitions. Word has length 96 [2020-10-12 20:07:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:35,029 INFO L479 AbstractCegarLoop]: Abstraction has 5577 states and 8739 transitions. [2020-10-12 20:07:35,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:07:35,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5577 states and 8739 transitions. [2020-10-12 20:07:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:35,032 INFO L422 BasicCegarLoop]: trace histogram [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 20:07:35,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 20:07:35,033 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1652802835, now seen corresponding path program 1 times [2020-10-12 20:07:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902077832] [2020-10-12 20:07:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:36,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:07:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 20:07:40,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:07:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:40,268 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:40,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:40,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:40,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:40,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:07:40,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:40,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:40,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902077832] [2020-10-12 20:07:40,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:07:40,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:07:40,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582819954] [2020-10-12 20:07:40,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:07:40,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:07:40,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:40,294 INFO L87 Difference]: Start difference. First operand 5577 states and 8739 transitions. Second operand 9 states. [2020-10-12 20:07:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:43,820 INFO L93 Difference]: Finished difference Result 12563 states and 19562 transitions. [2020-10-12 20:07:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:07:43,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:07:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:43,832 INFO L225 Difference]: With dead ends: 12563 [2020-10-12 20:07:43,832 INFO L226 Difference]: Without dead ends: 11191 [2020-10-12 20:07:43,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:07:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2020-10-12 20:07:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 5878. [2020-10-12 20:07:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5878 states. [2020-10-12 20:07:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 9215 transitions. [2020-10-12 20:07:44,469 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 9215 transitions. Word has length 96 [2020-10-12 20:07:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:44,469 INFO L479 AbstractCegarLoop]: Abstraction has 5878 states and 9215 transitions. [2020-10-12 20:07:44,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:07:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 9215 transitions. [2020-10-12 20:07:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:44,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:44,472 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:07:44,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 20:07:44,472 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1165967004, now seen corresponding path program 1 times [2020-10-12 20:07:44,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:44,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377272739] [2020-10-12 20:07:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:44,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:07:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:07:49,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:07:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:49,732 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:49,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:49,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:49,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 20:07:49,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:07:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:07:49,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 20:07:49,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377272739] [2020-10-12 20:07:49,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:07:49,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:07:49,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897584621] [2020-10-12 20:07:49,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:07:49,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:49,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:07:49,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:07:49,785 INFO L87 Difference]: Start difference. First operand 5878 states and 9215 transitions. Second operand 7 states. [2020-10-12 20:07:49,955 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-12 20:07:52,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:07:52,209 INFO L93 Difference]: Finished difference Result 17424 states and 27242 transitions. [2020-10-12 20:07:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:07:52,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 20:07:52,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:07:52,222 INFO L225 Difference]: With dead ends: 17424 [2020-10-12 20:07:52,222 INFO L226 Difference]: Without dead ends: 11675 [2020-10-12 20:07:52,229 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 20:07:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11675 states. [2020-10-12 20:07:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 5495. [2020-10-12 20:07:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5495 states. [2020-10-12 20:07:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5495 states to 5495 states and 8611 transitions. [2020-10-12 20:07:52,866 INFO L78 Accepts]: Start accepts. Automaton has 5495 states and 8611 transitions. Word has length 96 [2020-10-12 20:07:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:07:52,867 INFO L479 AbstractCegarLoop]: Abstraction has 5495 states and 8611 transitions. [2020-10-12 20:07:52,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:07:52,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states and 8611 transitions. [2020-10-12 20:07:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:07:52,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:07:52,870 INFO L422 BasicCegarLoop]: trace histogram [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 20:07:52,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 20:07:52,870 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:07:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:07:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash -802393995, now seen corresponding path program 2 times [2020-10-12 20:07:52,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:07:52,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984451727] [2020-10-12 20:07:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:07:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:52,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:57,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:57,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:07:57,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 20:07:57,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:58,083 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:07:58,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:07:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:07:58,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:07:58,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:07:58,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:07:58,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:07:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:07:58,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:07:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:07:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:07:58,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:07:58,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:07:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:07:58,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984451727] [2020-10-12 20:07:58,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:07:58,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:07:58,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676362700] [2020-10-12 20:07:58,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:07:58,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:07:58,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:07:58,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:07:58,110 INFO L87 Difference]: Start difference. First operand 5495 states and 8611 transitions. Second operand 9 states. [2020-10-12 20:08:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:01,035 INFO L93 Difference]: Finished difference Result 10518 states and 16409 transitions. [2020-10-12 20:08:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:08:01,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:08:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:01,045 INFO L225 Difference]: With dead ends: 10518 [2020-10-12 20:08:01,046 INFO L226 Difference]: Without dead ends: 9491 [2020-10-12 20:08:01,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:08:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2020-10-12 20:08:01,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 5565. [2020-10-12 20:08:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5565 states. [2020-10-12 20:08:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5565 states to 5565 states and 8715 transitions. [2020-10-12 20:08:01,709 INFO L78 Accepts]: Start accepts. Automaton has 5565 states and 8715 transitions. Word has length 96 [2020-10-12 20:08:01,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:01,709 INFO L479 AbstractCegarLoop]: Abstraction has 5565 states and 8715 transitions. [2020-10-12 20:08:01,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:08:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5565 states and 8715 transitions. [2020-10-12 20:08:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:08:01,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:01,713 INFO L422 BasicCegarLoop]: trace histogram [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 20:08:01,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 20:08:01,714 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1992676021, now seen corresponding path program 2 times [2020-10-12 20:08:01,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:01,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792498196] [2020-10-12 20:08:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:01,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:01,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:06,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:08:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:06,918 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:08:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:06,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:06,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:06,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:08:06,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:06,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:06,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:06,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792498196] [2020-10-12 20:08:06,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:08:06,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:08:06,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429944892] [2020-10-12 20:08:06,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:08:06,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:06,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:08:06,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:08:06,942 INFO L87 Difference]: Start difference. First operand 5565 states and 8715 transitions. Second operand 9 states. [2020-10-12 20:08:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:09,745 INFO L93 Difference]: Finished difference Result 12022 states and 18738 transitions. [2020-10-12 20:08:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:08:09,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:08:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:09,755 INFO L225 Difference]: With dead ends: 12022 [2020-10-12 20:08:09,755 INFO L226 Difference]: Without dead ends: 10650 [2020-10-12 20:08:09,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:08:09,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2020-10-12 20:08:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 5836. [2020-10-12 20:08:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5836 states. [2020-10-12 20:08:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 9131 transitions. [2020-10-12 20:08:10,456 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 9131 transitions. Word has length 96 [2020-10-12 20:08:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:10,457 INFO L479 AbstractCegarLoop]: Abstraction has 5836 states and 9131 transitions. [2020-10-12 20:08:10,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:08:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 9131 transitions. [2020-10-12 20:08:10,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:08:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:10,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 20:08:10,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 20:08:10,460 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:10,460 INFO L82 PathProgramCache]: Analyzing trace with hash 27389341, now seen corresponding path program 1 times [2020-10-12 20:08:10,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:10,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121137875] [2020-10-12 20:08:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:10,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:11,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 20:08:15,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:08:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 20:08:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:15,661 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:08:15,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:15,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:15,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:15,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:08:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:08:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:15,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:08:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 20:08:15,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121137875] [2020-10-12 20:08:15,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:08:15,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:08:15,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818469332] [2020-10-12 20:08:15,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 20:08:15,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 20:08:15,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:08:15,695 INFO L87 Difference]: Start difference. First operand 5836 states and 9131 transitions. Second operand 7 states. [2020-10-12 20:08:15,881 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-12 20:08:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:18,152 INFO L93 Difference]: Finished difference Result 12986 states and 20215 transitions. [2020-10-12 20:08:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 20:08:18,153 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 20:08:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:18,164 INFO L225 Difference]: With dead ends: 12986 [2020-10-12 20:08:18,164 INFO L226 Difference]: Without dead ends: 10661 [2020-10-12 20:08:18,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 20:08:18,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2020-10-12 20:08:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 5531. [2020-10-12 20:08:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5531 states. [2020-10-12 20:08:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 8667 transitions. [2020-10-12 20:08:18,852 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 8667 transitions. Word has length 96 [2020-10-12 20:08:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:18,852 INFO L479 AbstractCegarLoop]: Abstraction has 5531 states and 8667 transitions. [2020-10-12 20:08:18,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 20:08:18,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 8667 transitions. [2020-10-12 20:08:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:08:18,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:18,854 INFO L422 BasicCegarLoop]: trace histogram [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 20:08:18,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 20:08:18,855 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:18,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:18,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1280742722, now seen corresponding path program 3 times [2020-10-12 20:08:18,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:18,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008239974] [2020-10-12 20:08:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:19,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:19,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:19,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:20,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:23,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 20:08:23,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:24,096 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 20:08:24,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:08:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:24,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:24,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:08:24,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:08:24,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:08:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:08:24,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008239974] [2020-10-12 20:08:24,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 20:08:24,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 20:08:24,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146115452] [2020-10-12 20:08:24,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:08:24,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:08:24,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:08:24,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:08:24,122 INFO L87 Difference]: Start difference. First operand 5531 states and 8667 transitions. Second operand 9 states. [2020-10-12 20:08:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:08:30,789 INFO L93 Difference]: Finished difference Result 33597 states and 52202 transitions. [2020-10-12 20:08:30,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 20:08:30,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-12 20:08:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:08:30,822 INFO L225 Difference]: With dead ends: 33597 [2020-10-12 20:08:30,822 INFO L226 Difference]: Without dead ends: 32571 [2020-10-12 20:08:30,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-12 20:08:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2020-10-12 20:08:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 9277. [2020-10-12 20:08:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9277 states. [2020-10-12 20:08:32,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 14546 transitions. [2020-10-12 20:08:32,105 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 14546 transitions. Word has length 96 [2020-10-12 20:08:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:08:32,105 INFO L479 AbstractCegarLoop]: Abstraction has 9277 states and 14546 transitions. [2020-10-12 20:08:32,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:08:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 14546 transitions. [2020-10-12 20:08:32,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 20:08:32,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:08:32,109 INFO L422 BasicCegarLoop]: trace histogram [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 20:08:32,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 20:08:32,109 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:08:32,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:08:32,109 INFO L82 PathProgramCache]: Analyzing trace with hash -197708127, now seen corresponding path program 3 times [2020-10-12 20:08:32,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:08:32,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128159046] [2020-10-12 20:08:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:08:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:08:32,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:08:32,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking...