/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:32:18,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:32:18,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:32:18,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:32:18,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:32:18,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:32:18,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:32:18,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:32:18,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:32:18,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:32:18,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:32:18,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:32:18,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:32:18,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:32:18,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:32:18,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:32:18,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:32:18,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:32:18,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:32:18,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:32:18,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:32:18,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:32:18,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:32:18,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:32:18,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:32:18,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:32:18,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:32:18,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:32:18,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:32:18,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:32:18,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:32:18,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:32:18,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:32:18,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:32:18,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:32:18,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:32:18,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:32:18,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:32:18,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:32:18,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:32:18,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:32:18,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:32:18,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:32:18,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:32:18,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:32:18,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:32:18,228 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:32:18,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:32:18,228 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:32:18,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:32:18,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:32:18,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:32:18,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:32:18,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:32:18,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:32:18,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:32:18,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:32:18,231 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:32:18,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:32:18,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:32:18,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:32:18,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:32:18,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:32:18,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:32:18,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:32:18,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:32:18,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:32:18,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:32:18,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:32:18,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:32:18,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:32:18,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:32:18,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:32:18,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:32:18,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:32:18,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:32:18,567 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:32:18,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:32:18,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b07254a5/2bf236fbf6c8491bbb6e3994d2fe34e7/FLAGcba69ef61 [2020-10-13 14:32:19,284 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:32:19,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:32:19,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b07254a5/2bf236fbf6c8491bbb6e3994d2fe34e7/FLAGcba69ef61 [2020-10-13 14:32:19,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b07254a5/2bf236fbf6c8491bbb6e3994d2fe34e7 [2020-10-13 14:32:19,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:32:19,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:32:19,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:32:19,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:32:19,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:32:19,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:32:19" (1/1) ... [2020-10-13 14:32:19,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44452bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:19, skipping insertion in model container [2020-10-13 14:32:19,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:32:19" (1/1) ... [2020-10-13 14:32:19,472 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:32:19,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:32:20,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:32:20,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:32:20,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:32:20,749 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:32:20,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20 WrapperNode [2020-10-13 14:32:20,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:32:20,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:32:20,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:32:20,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:32:20,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... [2020-10-13 14:32:20,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:32:20,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:32:20,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:32:20,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:32:20,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:32:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:32:20,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:32:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:32:20,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:32:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:32:20,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:32:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:32:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:32:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:32:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:32:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:32:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:32:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:32:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:32:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:32:22,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:32:22,879 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:32:22,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:22 BoogieIcfgContainer [2020-10-13 14:32:22,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:32:22,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:32:22,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:32:22,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:32:22,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:32:19" (1/3) ... [2020-10-13 14:32:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bb6f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:22, skipping insertion in model container [2020-10-13 14:32:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:32:20" (2/3) ... [2020-10-13 14:32:22,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bb6f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:22, skipping insertion in model container [2020-10-13 14:32:22,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:22" (3/3) ... [2020-10-13 14:32:22,894 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-13 14:32:22,905 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:32:22,914 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-13 14:32:22,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-13 14:32:22,962 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:32:22,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:32:22,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:32:22,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:32:22,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:32:22,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:32:22,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:32:22,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:32:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states. [2020-10-13 14:32:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:32:23,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:23,012 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] [2020-10-13 14:32:23,013 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash -327179082, now seen corresponding path program 1 times [2020-10-13 14:32:23,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:23,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877283369] [2020-10-13 14:32:23,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:25,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:28,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:28,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:32:28,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:32:28,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 14:32:28,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:32:28,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 14:32:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:32:29,038 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:32:29,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:29,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:29,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:29,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 14:32:29,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:29,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877283369] [2020-10-13 14:32:29,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:29,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:32:29,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667276190] [2020-10-13 14:32:29,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:32:29,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:29,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:32:29,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:32:29,171 INFO L87 Difference]: Start difference. First operand 462 states. Second operand 4 states. [2020-10-13 14:32:29,706 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:32:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:32,922 INFO L93 Difference]: Finished difference Result 732 states and 1278 transitions. [2020-10-13 14:32:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:32:32,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-13 14:32:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:32,944 INFO L225 Difference]: With dead ends: 732 [2020-10-13 14:32:32,944 INFO L226 Difference]: Without dead ends: 575 [2020-10-13 14:32:32,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:32:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-10-13 14:32:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 569. [2020-10-13 14:32:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2020-10-13 14:32:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 758 transitions. [2020-10-13 14:32:33,069 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 758 transitions. Word has length 55 [2020-10-13 14:32:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:33,069 INFO L479 AbstractCegarLoop]: Abstraction has 569 states and 758 transitions. [2020-10-13 14:32:33,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:32:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 758 transitions. [2020-10-13 14:32:33,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:32:33,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:33,075 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] [2020-10-13 14:32:33,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:32:33,076 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:33,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:33,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1869485033, now seen corresponding path program 1 times [2020-10-13 14:32:33,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:33,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760700405] [2020-10-13 14:32:33,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:38,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:38,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:32:38,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:32:38,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 14:32:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:32:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:32:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:32:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:32:38,590 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:32:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:38,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:38,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:38,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:38,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:32:38,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:38,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:38,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:38,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760700405] [2020-10-13 14:32:38,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:38,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:32:38,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336228327] [2020-10-13 14:32:38,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:32:38,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:32:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:32:38,641 INFO L87 Difference]: Start difference. First operand 569 states and 758 transitions. Second operand 6 states. [2020-10-13 14:32:41,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:41,379 INFO L93 Difference]: Finished difference Result 1274 states and 1802 transitions. [2020-10-13 14:32:41,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:32:41,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-13 14:32:41,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:41,388 INFO L225 Difference]: With dead ends: 1274 [2020-10-13 14:32:41,389 INFO L226 Difference]: Without dead ends: 1011 [2020-10-13 14:32:41,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:32:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-13 14:32:41,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 577. [2020-10-13 14:32:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-10-13 14:32:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 762 transitions. [2020-10-13 14:32:41,450 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 762 transitions. Word has length 55 [2020-10-13 14:32:41,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:41,451 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 762 transitions. [2020-10-13 14:32:41,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:32:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 762 transitions. [2020-10-13 14:32:41,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:32:41,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:41,454 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] [2020-10-13 14:32:41,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:32:41,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:41,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:41,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1763444102, now seen corresponding path program 1 times [2020-10-13 14:32:41,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:41,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053838924] [2020-10-13 14:32:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:41,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:42,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:46,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:32:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:32:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:32:46,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:32:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:32:46,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 14:32:46,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:47,088 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:32:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:47,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:47,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:47,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:47,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:32:47,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:47,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:47,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:47,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053838924] [2020-10-13 14:32:47,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:47,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:32:47,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558978014] [2020-10-13 14:32:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:32:47,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:32:47,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:32:47,132 INFO L87 Difference]: Start difference. First operand 577 states and 762 transitions. Second operand 9 states. [2020-10-13 14:32:47,552 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2020-10-13 14:32:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:32:52,434 INFO L93 Difference]: Finished difference Result 1490 states and 2091 transitions. [2020-10-13 14:32:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:32:52,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-13 14:32:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:32:52,443 INFO L225 Difference]: With dead ends: 1490 [2020-10-13 14:32:52,443 INFO L226 Difference]: Without dead ends: 1309 [2020-10-13 14:32:52,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-13 14:32:52,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2020-10-13 14:32:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 628. [2020-10-13 14:32:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-10-13 14:32:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 833 transitions. [2020-10-13 14:32:52,491 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 833 transitions. Word has length 55 [2020-10-13 14:32:52,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:32:52,494 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 833 transitions. [2020-10-13 14:32:52,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:32:52,495 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 833 transitions. [2020-10-13 14:32:52,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:32:52,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:52,507 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] [2020-10-13 14:32:52,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:32:52,508 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:52,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:52,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1139237164, now seen corresponding path program 1 times [2020-10-13 14:32:52,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:52,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160648367] [2020-10-13 14:32:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:56,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:57,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:57,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:32:57,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:32:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:32:57,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:32:57,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:32:57,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:58,066 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:32:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:58,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:58,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:58,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:58,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:32:58,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:58,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:58,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:32:58,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160648367] [2020-10-13 14:32:58,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:58,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:58,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713667366] [2020-10-13 14:32:58,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:58,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:58,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:58,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:58,108 INFO L87 Difference]: Start difference. First operand 628 states and 833 transitions. Second operand 7 states. [2020-10-13 14:32:58,589 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:01,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:01,347 INFO L93 Difference]: Finished difference Result 2287 states and 3295 transitions. [2020-10-13 14:33:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:01,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-10-13 14:33:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:01,359 INFO L225 Difference]: With dead ends: 2287 [2020-10-13 14:33:01,359 INFO L226 Difference]: Without dead ends: 1850 [2020-10-13 14:33:01,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-10-13 14:33:01,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1437. [2020-10-13 14:33:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1437 states. [2020-10-13 14:33:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2064 transitions. [2020-10-13 14:33:01,446 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2064 transitions. Word has length 55 [2020-10-13 14:33:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:01,447 INFO L479 AbstractCegarLoop]: Abstraction has 1437 states and 2064 transitions. [2020-10-13 14:33:01,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2064 transitions. [2020-10-13 14:33:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 14:33:01,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:01,449 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] [2020-10-13 14:33:01,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:33:01,450 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:01,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1245278095, now seen corresponding path program 1 times [2020-10-13 14:33:01,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:01,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612314435] [2020-10-13 14:33:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:01,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:06,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:06,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 14:33:06,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:06,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:33:06,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-13 14:33:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:33:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:07,066 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:07,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:07,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:07,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:07,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:07,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:33:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:07,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612314435] [2020-10-13 14:33:07,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:07,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:33:07,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137055533] [2020-10-13 14:33:07,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:33:07,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:33:07,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:33:07,123 INFO L87 Difference]: Start difference. First operand 1437 states and 2064 transitions. Second operand 4 states. [2020-10-13 14:33:07,710 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:09,414 INFO L93 Difference]: Finished difference Result 3222 states and 4745 transitions. [2020-10-13 14:33:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:33:09,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-13 14:33:09,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:09,426 INFO L225 Difference]: With dead ends: 3222 [2020-10-13 14:33:09,426 INFO L226 Difference]: Without dead ends: 2263 [2020-10-13 14:33:09,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:33:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2020-10-13 14:33:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2243. [2020-10-13 14:33:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2020-10-13 14:33:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 3252 transitions. [2020-10-13 14:33:09,568 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 3252 transitions. Word has length 55 [2020-10-13 14:33:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:09,569 INFO L479 AbstractCegarLoop]: Abstraction has 2243 states and 3252 transitions. [2020-10-13 14:33:09,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:33:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 3252 transitions. [2020-10-13 14:33:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:09,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:09,573 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] [2020-10-13 14:33:09,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:33:09,574 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:09,574 INFO L82 PathProgramCache]: Analyzing trace with hash -301381471, now seen corresponding path program 1 times [2020-10-13 14:33:09,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:09,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173200291] [2020-10-13 14:33:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:09,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:09,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:10,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:14,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:33:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:15,164 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:15,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:15,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:15,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:33:15,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:15,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:33:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:15,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173200291] [2020-10-13 14:33:15,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:15,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:33:15,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584003888] [2020-10-13 14:33:15,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:15,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:15,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:15,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:15,221 INFO L87 Difference]: Start difference. First operand 2243 states and 3252 transitions. Second operand 6 states. [2020-10-13 14:33:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:17,707 INFO L93 Difference]: Finished difference Result 7361 states and 10902 transitions. [2020-10-13 14:33:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:33:17,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-10-13 14:33:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:17,738 INFO L225 Difference]: With dead ends: 7361 [2020-10-13 14:33:17,739 INFO L226 Difference]: Without dead ends: 5984 [2020-10-13 14:33:17,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:33:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5984 states. [2020-10-13 14:33:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5984 to 2230. [2020-10-13 14:33:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-10-13 14:33:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3214 transitions. [2020-10-13 14:33:17,934 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3214 transitions. Word has length 56 [2020-10-13 14:33:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:17,934 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 3214 transitions. [2020-10-13 14:33:17,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3214 transitions. [2020-10-13 14:33:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:17,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:17,937 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] [2020-10-13 14:33:17,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:33:17,938 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:17,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1921455489, now seen corresponding path program 1 times [2020-10-13 14:33:17,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:17,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219556184] [2020-10-13 14:33:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:17,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:18,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:19,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:33:22,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:33:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:23,431 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:23,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:23,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:23,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:33:23,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:23,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:23,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:23,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219556184] [2020-10-13 14:33:23,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:23,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:23,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228964878] [2020-10-13 14:33:23,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:23,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:23,468 INFO L87 Difference]: Start difference. First operand 2230 states and 3214 transitions. Second operand 7 states. [2020-10-13 14:33:23,925 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:26,429 INFO L93 Difference]: Finished difference Result 12704 states and 18845 transitions. [2020-10-13 14:33:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:26,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-13 14:33:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:26,472 INFO L225 Difference]: With dead ends: 12704 [2020-10-13 14:33:26,472 INFO L226 Difference]: Without dead ends: 10580 [2020-10-13 14:33:26,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:26,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2020-10-13 14:33:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5525. [2020-10-13 14:33:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2020-10-13 14:33:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 8099 transitions. [2020-10-13 14:33:26,855 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 8099 transitions. Word has length 56 [2020-10-13 14:33:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:26,855 INFO L479 AbstractCegarLoop]: Abstraction has 5525 states and 8099 transitions. [2020-10-13 14:33:26,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 8099 transitions. [2020-10-13 14:33:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:26,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:26,859 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] [2020-10-13 14:33:26,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:33:26,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:26,860 INFO L82 PathProgramCache]: Analyzing trace with hash 120079870, now seen corresponding path program 1 times [2020-10-13 14:33:26,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:26,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071740220] [2020-10-13 14:33:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:29,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:33:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:33:31,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:33:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:33:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:33:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:32,417 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:32,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:32,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:32,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:32,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:32,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:33:32,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:32,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:32,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:32,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071740220] [2020-10-13 14:33:32,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:32,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:33:32,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927592844] [2020-10-13 14:33:32,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:33:32,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:32,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:33:32,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:33:32,460 INFO L87 Difference]: Start difference. First operand 5525 states and 8099 transitions. Second operand 9 states. [2020-10-13 14:33:32,917 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:36,037 INFO L93 Difference]: Finished difference Result 29378 states and 42794 transitions. [2020-10-13 14:33:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:33:36,038 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-13 14:33:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:36,106 INFO L225 Difference]: With dead ends: 29378 [2020-10-13 14:33:36,106 INFO L226 Difference]: Without dead ends: 24492 [2020-10-13 14:33:36,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:33:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24492 states. [2020-10-13 14:33:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24492 to 5607. [2020-10-13 14:33:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5607 states. [2020-10-13 14:33:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 8017 transitions. [2020-10-13 14:33:36,591 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 8017 transitions. Word has length 56 [2020-10-13 14:33:36,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:36,592 INFO L479 AbstractCegarLoop]: Abstraction has 5607 states and 8017 transitions. [2020-10-13 14:33:36,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:33:36,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 8017 transitions. [2020-10-13 14:33:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 14:33:36,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:36,596 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] [2020-10-13 14:33:36,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:33:36,596 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1262683401, now seen corresponding path program 1 times [2020-10-13 14:33:36,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:36,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805967030] [2020-10-13 14:33:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:37,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:41,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:41,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:33:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:33:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:42,070 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:42,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:42,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:42,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:42,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:42,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:33:42,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:42,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:42,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:42,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805967030] [2020-10-13 14:33:42,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:42,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:42,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497086228] [2020-10-13 14:33:42,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:42,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:42,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:42,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:42,097 INFO L87 Difference]: Start difference. First operand 5607 states and 8017 transitions. Second operand 7 states. [2020-10-13 14:33:42,546 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:33:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:45,426 INFO L93 Difference]: Finished difference Result 17516 states and 25510 transitions. [2020-10-13 14:33:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:45,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-13 14:33:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:45,460 INFO L225 Difference]: With dead ends: 17516 [2020-10-13 14:33:45,460 INFO L226 Difference]: Without dead ends: 13992 [2020-10-13 14:33:45,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13992 states. [2020-10-13 14:33:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13992 to 7241. [2020-10-13 14:33:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7241 states. [2020-10-13 14:33:46,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 10405 transitions. [2020-10-13 14:33:46,054 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 10405 transitions. Word has length 56 [2020-10-13 14:33:46,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:46,055 INFO L479 AbstractCegarLoop]: Abstraction has 7241 states and 10405 transitions. [2020-10-13 14:33:46,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:46,055 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 10405 transitions. [2020-10-13 14:33:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:33:46,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:46,059 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] [2020-10-13 14:33:46,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:33:46,059 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:46,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1806735883, now seen corresponding path program 1 times [2020-10-13 14:33:46,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:46,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936724521] [2020-10-13 14:33:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:46,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:47,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:51,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:33:51,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:33:51,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:33:51,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:33:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:33:51,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:33:51,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:51,504 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:33:51,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:33:51,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:51,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:33:51,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:33:51,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936724521] [2020-10-13 14:33:51,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:51,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:33:51,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139522007] [2020-10-13 14:33:51,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:33:51,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:51,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:33:51,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:33:51,546 INFO L87 Difference]: Start difference. First operand 7241 states and 10405 transitions. Second operand 6 states. [2020-10-13 14:33:51,995 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-13 14:33:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:53,975 INFO L93 Difference]: Finished difference Result 14797 states and 21443 transitions. [2020-10-13 14:33:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:33:53,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-10-13 14:33:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:53,992 INFO L225 Difference]: With dead ends: 14797 [2020-10-13 14:33:53,992 INFO L226 Difference]: Without dead ends: 9411 [2020-10-13 14:33:54,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:33:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9411 states. [2020-10-13 14:33:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9411 to 8880. [2020-10-13 14:33:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8880 states. [2020-10-13 14:33:54,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8880 states to 8880 states and 12654 transitions. [2020-10-13 14:33:54,608 INFO L78 Accepts]: Start accepts. Automaton has 8880 states and 12654 transitions. Word has length 57 [2020-10-13 14:33:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:54,608 INFO L479 AbstractCegarLoop]: Abstraction has 8880 states and 12654 transitions. [2020-10-13 14:33:54,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:33:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8880 states and 12654 transitions. [2020-10-13 14:33:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 14:33:54,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:54,612 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] [2020-10-13 14:33:54,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:33:54,612 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:54,613 INFO L82 PathProgramCache]: Analyzing trace with hash -32247507, now seen corresponding path program 1 times [2020-10-13 14:33:54,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:54,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128424272] [2020-10-13 14:33:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:55,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:59,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 14:33:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:00,045 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:00,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:00,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:00,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128424272] [2020-10-13 14:34:00,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:00,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:34:00,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007185590] [2020-10-13 14:34:00,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:34:00,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:00,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:34:00,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:34:00,076 INFO L87 Difference]: Start difference. First operand 8880 states and 12654 transitions. Second operand 4 states. [2020-10-13 14:34:00,514 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:34:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:02,983 INFO L93 Difference]: Finished difference Result 22180 states and 31971 transitions. [2020-10-13 14:34:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:34:02,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-13 14:34:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:03,010 INFO L225 Difference]: With dead ends: 22180 [2020-10-13 14:34:03,010 INFO L226 Difference]: Without dead ends: 14439 [2020-10-13 14:34:03,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:34:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14439 states. [2020-10-13 14:34:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14439 to 14313. [2020-10-13 14:34:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14313 states. [2020-10-13 14:34:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14313 states to 14313 states and 20299 transitions. [2020-10-13 14:34:04,100 INFO L78 Accepts]: Start accepts. Automaton has 14313 states and 20299 transitions. Word has length 57 [2020-10-13 14:34:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:04,100 INFO L479 AbstractCegarLoop]: Abstraction has 14313 states and 20299 transitions. [2020-10-13 14:34:04,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:34:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 14313 states and 20299 transitions. [2020-10-13 14:34:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:04,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:04,104 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] [2020-10-13 14:34:04,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:34:04,105 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:04,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1480679715, now seen corresponding path program 1 times [2020-10-13 14:34:04,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:04,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86433684] [2020-10-13 14:34:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:04,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:04,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:09,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:09,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:34:09,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:34:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:34:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:09,631 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:09,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:09,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:09,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:09,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:09,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:09,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:09,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86433684] [2020-10-13 14:34:09,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:09,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:34:09,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305182286] [2020-10-13 14:34:09,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:34:09,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:09,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:34:09,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:34:09,659 INFO L87 Difference]: Start difference. First operand 14313 states and 20299 transitions. Second operand 9 states. [2020-10-13 14:34:10,090 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 281 [2020-10-13 14:34:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:16,253 INFO L93 Difference]: Finished difference Result 62823 states and 89342 transitions. [2020-10-13 14:34:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:34:16,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-13 14:34:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:16,322 INFO L225 Difference]: With dead ends: 62823 [2020-10-13 14:34:16,322 INFO L226 Difference]: Without dead ends: 52400 [2020-10-13 14:34:16,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:34:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52400 states. [2020-10-13 14:34:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52400 to 14304. [2020-10-13 14:34:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14304 states. [2020-10-13 14:34:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14304 states to 14304 states and 20286 transitions. [2020-10-13 14:34:17,964 INFO L78 Accepts]: Start accepts. Automaton has 14304 states and 20286 transitions. Word has length 58 [2020-10-13 14:34:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:17,964 INFO L479 AbstractCegarLoop]: Abstraction has 14304 states and 20286 transitions. [2020-10-13 14:34:17,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:34:17,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14304 states and 20286 transitions. [2020-10-13 14:34:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:17,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:17,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:34:17,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:34:17,969 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:17,969 INFO L82 PathProgramCache]: Analyzing trace with hash 715984400, now seen corresponding path program 1 times [2020-10-13 14:34:17,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:17,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032584685] [2020-10-13 14:34:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:18,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:23,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:23,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:23,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:34:23,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:23,513 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:23,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:23,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:23,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:23,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:23,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032584685] [2020-10-13 14:34:23,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:23,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:34:23,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720621415] [2020-10-13 14:34:23,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:34:23,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:34:23,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:34:23,543 INFO L87 Difference]: Start difference. First operand 14304 states and 20286 transitions. Second operand 10 states. [2020-10-13 14:34:24,018 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-13 14:34:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:33,547 INFO L93 Difference]: Finished difference Result 79992 states and 113471 transitions. [2020-10-13 14:34:33,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:34:33,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-13 14:34:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:33,634 INFO L225 Difference]: With dead ends: 79992 [2020-10-13 14:34:33,635 INFO L226 Difference]: Without dead ends: 69569 [2020-10-13 14:34:33,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-13 14:34:33,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69569 states. [2020-10-13 14:34:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69569 to 14307. [2020-10-13 14:34:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14307 states. [2020-10-13 14:34:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 20289 transitions. [2020-10-13 14:34:35,238 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 20289 transitions. Word has length 58 [2020-10-13 14:34:35,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:35,239 INFO L479 AbstractCegarLoop]: Abstraction has 14307 states and 20289 transitions. [2020-10-13 14:34:35,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:34:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 20289 transitions. [2020-10-13 14:34:35,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:35,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:35,242 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] [2020-10-13 14:34:35,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:34:35,242 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:35,242 INFO L82 PathProgramCache]: Analyzing trace with hash -338076184, now seen corresponding path program 1 times [2020-10-13 14:34:35,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:35,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393534113] [2020-10-13 14:34:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:36,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:37,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:38,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:41,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:41,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:34:41,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5875 [2020-10-13 14:34:41,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:41,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:34:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:34:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:41,582 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:34:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:41,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:41,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393534113] [2020-10-13 14:34:41,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:41,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:34:41,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255788625] [2020-10-13 14:34:41,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:41,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:41,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:41,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:41,627 INFO L87 Difference]: Start difference. First operand 14307 states and 20289 transitions. Second operand 6 states. [2020-10-13 14:34:42,101 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-13 14:34:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:44,629 INFO L93 Difference]: Finished difference Result 25123 states and 35831 transitions. [2020-10-13 14:34:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:34:44,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 14:34:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:44,647 INFO L225 Difference]: With dead ends: 25123 [2020-10-13 14:34:44,647 INFO L226 Difference]: Without dead ends: 13109 [2020-10-13 14:34:44,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:34:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13109 states. [2020-10-13 14:34:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13109 to 10515. [2020-10-13 14:34:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10515 states. [2020-10-13 14:34:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 14784 transitions. [2020-10-13 14:34:45,629 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 14784 transitions. Word has length 58 [2020-10-13 14:34:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:45,629 INFO L479 AbstractCegarLoop]: Abstraction has 10515 states and 14784 transitions. [2020-10-13 14:34:45,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:34:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 14784 transitions. [2020-10-13 14:34:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:34:45,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:45,632 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] [2020-10-13 14:34:45,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:34:45,632 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:45,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:45,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1013274076, now seen corresponding path program 1 times [2020-10-13 14:34:45,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:45,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598500277] [2020-10-13 14:34:45,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:45,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:50,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:50,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:34:50,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:34:50,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:34:50,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:34:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:34:50,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:34:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:34:51,231 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:34:51,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:51,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:51,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:51,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:34:51,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598500277] [2020-10-13 14:34:51,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:51,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 14:34:51,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7509514] [2020-10-13 14:34:51,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:34:51,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:51,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:34:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:34:51,265 INFO L87 Difference]: Start difference. First operand 10515 states and 14784 transitions. Second operand 6 states. [2020-10-13 14:34:51,706 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-13 14:34:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:58,574 INFO L93 Difference]: Finished difference Result 50433 states and 72005 transitions. [2020-10-13 14:34:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:34:58,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 14:34:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:58,626 INFO L225 Difference]: With dead ends: 50433 [2020-10-13 14:34:58,626 INFO L226 Difference]: Without dead ends: 43168 [2020-10-13 14:34:58,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:34:58,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43168 states. [2020-10-13 14:35:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43168 to 17590. [2020-10-13 14:35:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17590 states. [2020-10-13 14:35:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17590 states to 17590 states and 24821 transitions. [2020-10-13 14:35:00,762 INFO L78 Accepts]: Start accepts. Automaton has 17590 states and 24821 transitions. Word has length 58 [2020-10-13 14:35:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:00,763 INFO L479 AbstractCegarLoop]: Abstraction has 17590 states and 24821 transitions. [2020-10-13 14:35:00,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 17590 states and 24821 transitions. [2020-10-13 14:35:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 14:35:00,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:00,765 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] [2020-10-13 14:35:00,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:35:00,765 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:00,766 INFO L82 PathProgramCache]: Analyzing trace with hash -2139089689, now seen corresponding path program 1 times [2020-10-13 14:35:00,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:00,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260945239] [2020-10-13 14:35:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:03,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:03,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:04,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:35:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:35:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:35:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:06,238 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:06,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:35:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:06,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260945239] [2020-10-13 14:35:06,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:06,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:35:06,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066988442] [2020-10-13 14:35:06,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:35:06,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:06,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:35:06,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:35:06,280 INFO L87 Difference]: Start difference. First operand 17590 states and 24821 transitions. Second operand 6 states. [2020-10-13 14:35:06,750 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-13 14:35:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:09,287 INFO L93 Difference]: Finished difference Result 24761 states and 35113 transitions. [2020-10-13 14:35:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:35:09,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-13 14:35:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:09,297 INFO L225 Difference]: With dead ends: 24761 [2020-10-13 14:35:09,298 INFO L226 Difference]: Without dead ends: 10190 [2020-10-13 14:35:09,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:35:09,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2020-10-13 14:35:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 7759. [2020-10-13 14:35:10,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7759 states. [2020-10-13 14:35:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 10801 transitions. [2020-10-13 14:35:10,197 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 10801 transitions. Word has length 58 [2020-10-13 14:35:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:10,197 INFO L479 AbstractCegarLoop]: Abstraction has 7759 states and 10801 transitions. [2020-10-13 14:35:10,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:35:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 10801 transitions. [2020-10-13 14:35:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:35:10,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:10,199 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] [2020-10-13 14:35:10,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:35:10,199 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:10,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:10,199 INFO L82 PathProgramCache]: Analyzing trace with hash -267044549, now seen corresponding path program 1 times [2020-10-13 14:35:10,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:10,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782820394] [2020-10-13 14:35:10,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:14,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:15,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:35:15,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:35:15,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:35:15,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:35:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:35:15,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 14:35:15,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:15,837 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:15,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:15,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:15,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:15,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:15,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:15,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782820394] [2020-10-13 14:35:15,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:15,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:35:15,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946851217] [2020-10-13 14:35:15,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:35:15,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:35:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:35:15,869 INFO L87 Difference]: Start difference. First operand 7759 states and 10801 transitions. Second operand 10 states. [2020-10-13 14:35:16,381 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2020-10-13 14:35:20,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:20,610 INFO L93 Difference]: Finished difference Result 15082 states and 21117 transitions. [2020-10-13 14:35:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:35:20,610 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-13 14:35:20,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:20,626 INFO L225 Difference]: With dead ends: 15082 [2020-10-13 14:35:20,626 INFO L226 Difference]: Without dead ends: 15078 [2020-10-13 14:35:20,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:35:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15078 states. [2020-10-13 14:35:21,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15078 to 7759. [2020-10-13 14:35:21,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7759 states. [2020-10-13 14:35:21,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 10800 transitions. [2020-10-13 14:35:21,605 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 10800 transitions. Word has length 59 [2020-10-13 14:35:21,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:21,605 INFO L479 AbstractCegarLoop]: Abstraction has 7759 states and 10800 transitions. [2020-10-13 14:35:21,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:35:21,605 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 10800 transitions. [2020-10-13 14:35:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:35:21,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:21,607 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] [2020-10-13 14:35:21,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:35:21,608 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:21,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1929619566, now seen corresponding path program 1 times [2020-10-13 14:35:21,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:21,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825192392] [2020-10-13 14:35:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:23,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:26,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:26,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:35:26,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:27,148 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:27,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:27,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:27,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825192392] [2020-10-13 14:35:27,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:27,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:35:27,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771547259] [2020-10-13 14:35:27,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:35:27,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:27,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:35:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:35:27,183 INFO L87 Difference]: Start difference. First operand 7759 states and 10800 transitions. Second operand 10 states. [2020-10-13 14:35:28,264 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 299 [2020-10-13 14:35:34,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:34,420 INFO L93 Difference]: Finished difference Result 27067 states and 37573 transitions. [2020-10-13 14:35:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 14:35:34,420 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-13 14:35:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:34,449 INFO L225 Difference]: With dead ends: 27067 [2020-10-13 14:35:34,450 INFO L226 Difference]: Without dead ends: 20972 [2020-10-13 14:35:34,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2020-10-13 14:35:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20972 states. [2020-10-13 14:35:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20972 to 7752. [2020-10-13 14:35:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7752 states. [2020-10-13 14:35:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7752 states to 7752 states and 10791 transitions. [2020-10-13 14:35:35,607 INFO L78 Accepts]: Start accepts. Automaton has 7752 states and 10791 transitions. Word has length 59 [2020-10-13 14:35:35,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:35,607 INFO L479 AbstractCegarLoop]: Abstraction has 7752 states and 10791 transitions. [2020-10-13 14:35:35,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:35:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7752 states and 10791 transitions. [2020-10-13 14:35:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 14:35:35,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:35,611 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] [2020-10-13 14:35:35,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:35:35,612 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 875558982, now seen corresponding path program 1 times [2020-10-13 14:35:35,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:35,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296035522] [2020-10-13 14:35:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:35,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:38,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:39,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:35:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:35:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:35:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:41,162 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:41,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:41,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:41,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296035522] [2020-10-13 14:35:41,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:41,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:35:41,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930662797] [2020-10-13 14:35:41,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:35:41,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:41,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:35:41,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:35:41,195 INFO L87 Difference]: Start difference. First operand 7752 states and 10791 transitions. Second operand 11 states. [2020-10-13 14:35:41,693 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 293 [2020-10-13 14:35:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:51,717 INFO L93 Difference]: Finished difference Result 31748 states and 43875 transitions. [2020-10-13 14:35:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 14:35:51,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-13 14:35:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:51,749 INFO L225 Difference]: With dead ends: 31748 [2020-10-13 14:35:51,749 INFO L226 Difference]: Without dead ends: 31743 [2020-10-13 14:35:51,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2020-10-13 14:35:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31743 states. [2020-10-13 14:35:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31743 to 7752. [2020-10-13 14:35:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7752 states. [2020-10-13 14:35:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7752 states to 7752 states and 10790 transitions. [2020-10-13 14:35:52,898 INFO L78 Accepts]: Start accepts. Automaton has 7752 states and 10790 transitions. Word has length 59 [2020-10-13 14:35:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:52,898 INFO L479 AbstractCegarLoop]: Abstraction has 7752 states and 10790 transitions. [2020-10-13 14:35:52,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:35:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7752 states and 10790 transitions. [2020-10-13 14:35:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:35:52,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:52,900 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] [2020-10-13 14:35:52,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:35:52,900 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash 419329594, now seen corresponding path program 1 times [2020-10-13 14:35:52,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:52,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683856759] [2020-10-13 14:35:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:53,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2748 [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:35:55,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 14:35:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 14:35:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:56,072 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:35:56,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:35:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:56,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:35:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:35:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:35:56,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683856759] [2020-10-13 14:35:56,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:35:56,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:35:56,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623899616] [2020-10-13 14:35:56,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:35:56,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:35:56,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:35:56,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:56,100 INFO L87 Difference]: Start difference. First operand 7752 states and 10790 transitions. Second operand 4 states. [2020-10-13 14:35:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:58,545 INFO L93 Difference]: Finished difference Result 11381 states and 15872 transitions. [2020-10-13 14:35:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:35:58,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-13 14:35:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:58,554 INFO L225 Difference]: With dead ends: 11381 [2020-10-13 14:35:58,554 INFO L226 Difference]: Without dead ends: 7512 [2020-10-13 14:35:58,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:35:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7512 states. [2020-10-13 14:35:59,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7512 to 5867. [2020-10-13 14:35:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5867 states. [2020-10-13 14:35:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 8081 transitions. [2020-10-13 14:35:59,534 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 8081 transitions. Word has length 60 [2020-10-13 14:35:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:59,534 INFO L479 AbstractCegarLoop]: Abstraction has 5867 states and 8081 transitions. [2020-10-13 14:35:59,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:35:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 8081 transitions. [2020-10-13 14:35:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:35:59,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:59,536 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] [2020-10-13 14:35:59,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:35:59,536 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:59,536 INFO L82 PathProgramCache]: Analyzing trace with hash 529086290, now seen corresponding path program 1 times [2020-10-13 14:35:59,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:59,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816297210] [2020-10-13 14:35:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:59,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:59,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1586 [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 14:36:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:36:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:01,564 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:01,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:01,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:01,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816297210] [2020-10-13 14:36:01,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:01,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:01,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648573344] [2020-10-13 14:36:01,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:01,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:01,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:01,591 INFO L87 Difference]: Start difference. First operand 5867 states and 8081 transitions. Second operand 4 states. [2020-10-13 14:36:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:04,014 INFO L93 Difference]: Finished difference Result 8819 states and 12153 transitions. [2020-10-13 14:36:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:36:04,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-13 14:36:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:04,023 INFO L225 Difference]: With dead ends: 8819 [2020-10-13 14:36:04,023 INFO L226 Difference]: Without dead ends: 5862 [2020-10-13 14:36:04,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5862 states. [2020-10-13 14:36:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5862 to 4679. [2020-10-13 14:36:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4679 states. [2020-10-13 14:36:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 6354 transitions. [2020-10-13 14:36:05,013 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 6354 transitions. Word has length 60 [2020-10-13 14:36:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:05,013 INFO L479 AbstractCegarLoop]: Abstraction has 4679 states and 6354 transitions. [2020-10-13 14:36:05,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 6354 transitions. [2020-10-13 14:36:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 14:36:05,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:05,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:36:05,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:36:05,015 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash 954091544, now seen corresponding path program 1 times [2020-10-13 14:36:05,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:05,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045089418] [2020-10-13 14:36:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:06,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 14:36:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:07,381 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-13 14:36:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:36:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:36:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:36:07,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:36:07,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:36:07,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:36:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:36:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:36:07,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045089418] [2020-10-13 14:36:07,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:36:07,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:36:07,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160995723] [2020-10-13 14:36:07,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:36:07,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:36:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:36:07,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:07,408 INFO L87 Difference]: Start difference. First operand 4679 states and 6354 transitions. Second operand 4 states. [2020-10-13 14:36:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:36:09,500 INFO L93 Difference]: Finished difference Result 5969 states and 8087 transitions. [2020-10-13 14:36:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:36:09,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-13 14:36:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:36:09,506 INFO L225 Difference]: With dead ends: 5969 [2020-10-13 14:36:09,506 INFO L226 Difference]: Without dead ends: 3993 [2020-10-13 14:36:09,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:36:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3993 states. [2020-10-13 14:36:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3993 to 3245. [2020-10-13 14:36:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3245 states. [2020-10-13 14:36:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4305 transitions. [2020-10-13 14:36:10,205 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4305 transitions. Word has length 60 [2020-10-13 14:36:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:36:10,205 INFO L479 AbstractCegarLoop]: Abstraction has 3245 states and 4305 transitions. [2020-10-13 14:36:10,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:36:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4305 transitions. [2020-10-13 14:36:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 14:36:10,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:36:10,207 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] [2020-10-13 14:36:10,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:36:10,207 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:36:10,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:36:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2003969658, now seen corresponding path program 1 times [2020-10-13 14:36:10,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:36:10,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442890610] [2020-10-13 14:36:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:36:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat