/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:48:28,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:48:28,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:48:28,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:48:28,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:48:28,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:48:28,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:48:28,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:48:28,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:48:28,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:48:28,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:48:28,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:48:28,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:48:28,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:48:28,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:48:28,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:48:28,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:48:28,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:48:28,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:48:28,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:48:28,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:48:28,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:48:28,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:48:28,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:48:28,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:48:28,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:48:28,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:48:28,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:48:28,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:48:28,825 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:48:28,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:48:28,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:48:28,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:48:28,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:48:28,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:48:28,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:48:28,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:48:28,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:48:28,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:48:28,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:48:28,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:48:28,840 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 [2020-10-15 03:48:28,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:48:28,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:48:28,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:48:28,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:48:28,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:48:28,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:48:28,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:48:28,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:48:28,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:48:28,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:48:28,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:48:28,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:48:28,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:48:28,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:48:28,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:48:28,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:48:28,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:48:28,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:48:28,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:48:28,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:48:28,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:48:28,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:48:28,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:48:28,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:48:28,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:48:28,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:48:28,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:48:28,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:48:28,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:48:28,897 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:48:29,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:48:29,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:48:29,234 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:48:29,236 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:48:29,237 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:48:29,237 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:48:29,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f447f6d0d/212b08a1d83e4730972aee8bef5ecba9/FLAG2e341bbe2 [2020-10-15 03:48:29,936 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:48:29,937 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:48:29,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f447f6d0d/212b08a1d83e4730972aee8bef5ecba9/FLAG2e341bbe2 [2020-10-15 03:48:30,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f447f6d0d/212b08a1d83e4730972aee8bef5ecba9 [2020-10-15 03:48:30,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:48:30,138 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:48:30,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:48:30,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:48:30,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:48:30,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:48:30" (1/1) ... [2020-10-15 03:48:30,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742cf951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:30, skipping insertion in model container [2020-10-15 03:48:30,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:48:30" (1/1) ... [2020-10-15 03:48:30,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:48:30,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:48:31,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:48:31,122 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:48:31,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:48:31,576 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:48:31,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31 WrapperNode [2020-10-15 03:48:31,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:48:31,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:48:31,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:48:31,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:48:31,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (1/1) ... [2020-10-15 03:48:31,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:48:31,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:48:31,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:48:31,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:48:31,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (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 [2020-10-15 03:48:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:48:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:48:31,852 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:48:31,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:48:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:48:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:48:31,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:48:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:48:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:48:31,855 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:48:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:48:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:48:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:48:31,856 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:48:31,857 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:48:31,858 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:48:31,858 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:48:31,858 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:48:31,859 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:48:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:48:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:48:31,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:48:34,159 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:48:34,159 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:48:34,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:48:34 BoogieIcfgContainer [2020-10-15 03:48:34,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:48:34,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:48:34,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:48:34,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:48:34,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:48:30" (1/3) ... [2020-10-15 03:48:34,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cdcd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:48:34, skipping insertion in model container [2020-10-15 03:48:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:48:31" (2/3) ... [2020-10-15 03:48:34,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17cdcd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:48:34, skipping insertion in model container [2020-10-15 03:48:34,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:48:34" (3/3) ... [2020-10-15 03:48:34,177 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 03:48:34,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:48:34,196 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 03:48:34,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-15 03:48:34,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:48:34,237 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:48:34,237 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:48:34,237 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:48:34,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:48:34,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:48:34,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:48:34,238 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:48:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states. [2020-10-15 03:48:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-15 03:48:34,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:34,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:34,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:34,301 INFO L82 PathProgramCache]: Analyzing trace with hash 57149415, now seen corresponding path program 1 times [2020-10-15 03:48:34,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:34,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607230295] [2020-10-15 03:48:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:36,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 03:48:39,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:48:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:48:39,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:39,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:48:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:48:39,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 03:48:39,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-15 03:48:40,742 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:48:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:40,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 03:48:40,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:40,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:48:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:48:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:48:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:48:40,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607230295] [2020-10-15 03:48:40,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:40,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:48:40,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431322283] [2020-10-15 03:48:40,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:48:40,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:40,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:48:40,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:40,878 INFO L87 Difference]: Start difference. First operand 707 states. Second operand 8 states. [2020-10-15 03:48:41,506 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:48:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:47,427 INFO L93 Difference]: Finished difference Result 1244 states and 2116 transitions. [2020-10-15 03:48:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:48:47,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-10-15 03:48:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:47,456 INFO L225 Difference]: With dead ends: 1244 [2020-10-15 03:48:47,456 INFO L226 Difference]: Without dead ends: 1007 [2020-10-15 03:48:47,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:48:47,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-10-15 03:48:47,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 707. [2020-10-15 03:48:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-15 03:48:47,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 946 transitions. [2020-10-15 03:48:47,585 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 946 transitions. Word has length 66 [2020-10-15 03:48:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:47,586 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 946 transitions. [2020-10-15 03:48:47,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:48:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 946 transitions. [2020-10-15 03:48:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:48:47,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:47,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:47,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:48:47,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:47,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:47,600 INFO L82 PathProgramCache]: Analyzing trace with hash -118466614, now seen corresponding path program 1 times [2020-10-15 03:48:47,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:47,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193551203] [2020-10-15 03:48:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:47,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:48,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:48,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:50,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:50,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:48:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:48:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:48:52,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:52,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:48:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:48:52,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:48:52,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:48:53,423 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:48:53,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:48:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:53,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:48:53,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:48:53,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:48:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 03:48:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:48:53,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:48:53,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:48:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:48:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:48:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:48:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:48:53,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193551203] [2020-10-15 03:48:53,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:48:53,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:48:53,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298566740] [2020-10-15 03:48:53,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:48:53,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:48:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:48:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:48:53,520 INFO L87 Difference]: Start difference. First operand 707 states and 946 transitions. Second operand 8 states. [2020-10-15 03:48:54,263 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-15 03:48:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:48:59,005 INFO L93 Difference]: Finished difference Result 1760 states and 2528 transitions. [2020-10-15 03:48:59,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:48:59,005 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-15 03:48:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:48:59,016 INFO L225 Difference]: With dead ends: 1760 [2020-10-15 03:48:59,017 INFO L226 Difference]: Without dead ends: 1652 [2020-10-15 03:48:59,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:48:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2020-10-15 03:48:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 729. [2020-10-15 03:48:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-15 03:48:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 974 transitions. [2020-10-15 03:48:59,084 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 974 transitions. Word has length 67 [2020-10-15 03:48:59,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:48:59,085 INFO L479 AbstractCegarLoop]: Abstraction has 729 states and 974 transitions. [2020-10-15 03:48:59,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:48:59,085 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 974 transitions. [2020-10-15 03:48:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:48:59,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:48:59,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:48:59,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:48:59,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:48:59,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:48:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1195571622, now seen corresponding path program 1 times [2020-10-15 03:48:59,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:48:59,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972107555] [2020-10-15 03:48:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:48:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:48:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:48:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:01,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:02,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:04,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:04,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:49:04,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:49:04,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:49:04,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:04,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:04,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:49:04,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:04,675 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:04,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:04,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:04,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:04,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 03:49:04,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:04,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:04,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:04,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:04,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972107555] [2020-10-15 03:49:04,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:04,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:04,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826378829] [2020-10-15 03:49:04,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:49:04,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:04,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:49:04,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:04,754 INFO L87 Difference]: Start difference. First operand 729 states and 974 transitions. Second operand 8 states. [2020-10-15 03:49:05,246 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-15 03:49:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:10,198 INFO L93 Difference]: Finished difference Result 1224 states and 1717 transitions. [2020-10-15 03:49:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:49:10,198 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-10-15 03:49:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:10,205 INFO L225 Difference]: With dead ends: 1224 [2020-10-15 03:49:10,205 INFO L226 Difference]: Without dead ends: 1121 [2020-10-15 03:49:10,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:49:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2020-10-15 03:49:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 731. [2020-10-15 03:49:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-15 03:49:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 976 transitions. [2020-10-15 03:49:10,243 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 976 transitions. Word has length 67 [2020-10-15 03:49:10,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:10,243 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 976 transitions. [2020-10-15 03:49:10,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 976 transitions. [2020-10-15 03:49:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 03:49:10,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:10,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:10,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:49:10,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:10,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1027992507, now seen corresponding path program 1 times [2020-10-15 03:49:10,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:10,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328296604] [2020-10-15 03:49:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:12,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:15,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:15,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-15 03:49:15,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:49:15,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:49:15,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:16,046 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:16,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:16,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:16,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:16,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:49:16,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:16,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:16,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:16,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:16,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328296604] [2020-10-15 03:49:16,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:16,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:16,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423393604] [2020-10-15 03:49:16,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:49:16,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:16,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:49:16,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:49:16,137 INFO L87 Difference]: Start difference. First operand 731 states and 976 transitions. Second operand 7 states. [2020-10-15 03:49:16,658 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2020-10-15 03:49:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:21,032 INFO L93 Difference]: Finished difference Result 1208 states and 1677 transitions. [2020-10-15 03:49:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:49:21,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-15 03:49:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:21,041 INFO L225 Difference]: With dead ends: 1208 [2020-10-15 03:49:21,041 INFO L226 Difference]: Without dead ends: 1120 [2020-10-15 03:49:21,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-15 03:49:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2020-10-15 03:49:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 778. [2020-10-15 03:49:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-10-15 03:49:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1041 transitions. [2020-10-15 03:49:21,085 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1041 transitions. Word has length 67 [2020-10-15 03:49:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:21,088 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 1041 transitions. [2020-10-15 03:49:21,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:49:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1041 transitions. [2020-10-15 03:49:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:49:21,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:21,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:21,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:49:21,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:21,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1956714488, now seen corresponding path program 1 times [2020-10-15 03:49:21,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:21,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819266995] [2020-10-15 03:49:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:21,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:25,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:25,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:49:25,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:49:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4683 [2020-10-15 03:49:25,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:25,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 03:49:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:26,385 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:26,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:26,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:26,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:26,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:26,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:26,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 03:49:26,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:26,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:26,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:26,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:26,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819266995] [2020-10-15 03:49:26,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:26,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:26,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143475945] [2020-10-15 03:49:26,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:49:26,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:26,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:49:26,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:26,464 INFO L87 Difference]: Start difference. First operand 778 states and 1041 transitions. Second operand 8 states. [2020-10-15 03:49:27,024 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-15 03:49:31,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:31,237 INFO L93 Difference]: Finished difference Result 1484 states and 2067 transitions. [2020-10-15 03:49:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:49:31,238 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 03:49:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:31,246 INFO L225 Difference]: With dead ends: 1484 [2020-10-15 03:49:31,246 INFO L226 Difference]: Without dead ends: 1329 [2020-10-15 03:49:31,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:49:31,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2020-10-15 03:49:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 814. [2020-10-15 03:49:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-15 03:49:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1089 transitions. [2020-10-15 03:49:31,297 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1089 transitions. Word has length 68 [2020-10-15 03:49:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:31,298 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1089 transitions. [2020-10-15 03:49:31,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1089 transitions. [2020-10-15 03:49:31,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:49:31,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:31,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:31,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:49:31,301 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:31,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1769557421, now seen corresponding path program 1 times [2020-10-15 03:49:31,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:31,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729140783] [2020-10-15 03:49:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:31,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:31,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:31,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:31,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:33,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:49:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 03:49:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:36,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 03:49:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:37,077 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:37,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:37,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:37,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:37,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:37,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:37,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:49:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:37,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:37,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:37,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729140783] [2020-10-15 03:49:37,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:37,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:49:37,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877300504] [2020-10-15 03:49:37,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:37,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:37,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:37,154 INFO L87 Difference]: Start difference. First operand 814 states and 1089 transitions. Second operand 6 states. [2020-10-15 03:49:37,658 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-15 03:49:40,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:40,961 INFO L93 Difference]: Finished difference Result 1370 states and 1829 transitions. [2020-10-15 03:49:40,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:49:40,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:49:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:40,967 INFO L225 Difference]: With dead ends: 1370 [2020-10-15 03:49:40,967 INFO L226 Difference]: Without dead ends: 922 [2020-10-15 03:49:40,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2020-10-15 03:49:41,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 918. [2020-10-15 03:49:41,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-10-15 03:49:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1184 transitions. [2020-10-15 03:49:41,027 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1184 transitions. Word has length 68 [2020-10-15 03:49:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:41,028 INFO L479 AbstractCegarLoop]: Abstraction has 918 states and 1184 transitions. [2020-10-15 03:49:41,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:49:41,028 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1184 transitions. [2020-10-15 03:49:41,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:41,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:41,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:41,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:49:41,031 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:41,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 169036722, now seen corresponding path program 1 times [2020-10-15 03:49:41,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:41,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912949055] [2020-10-15 03:49:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:41,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:41,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:46,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:46,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:46,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:49:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:46,768 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:46,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:46,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:46,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:46,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 03:49:46,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:46,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:46,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:49:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:46,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912949055] [2020-10-15 03:49:46,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:46,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:46,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939502595] [2020-10-15 03:49:46,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:49:46,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:46,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:49:46,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:46,889 INFO L87 Difference]: Start difference. First operand 918 states and 1184 transitions. Second operand 8 states. [2020-10-15 03:49:47,371 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:49:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:49:51,875 INFO L93 Difference]: Finished difference Result 2031 states and 2828 transitions. [2020-10-15 03:49:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:49:51,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-15 03:49:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:49:51,884 INFO L225 Difference]: With dead ends: 2031 [2020-10-15 03:49:51,884 INFO L226 Difference]: Without dead ends: 1803 [2020-10-15 03:49:51,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:49:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-10-15 03:49:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 920. [2020-10-15 03:49:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-10-15 03:49:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1184 transitions. [2020-10-15 03:49:51,963 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1184 transitions. Word has length 69 [2020-10-15 03:49:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:49:51,963 INFO L479 AbstractCegarLoop]: Abstraction has 920 states and 1184 transitions. [2020-10-15 03:49:51,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:49:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1184 transitions. [2020-10-15 03:49:51,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:49:51,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:51,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:51,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:49:51,967 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1469997740, now seen corresponding path program 1 times [2020-10-15 03:49:51,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:51,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500423579] [2020-10-15 03:49:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:52,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:55,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:55,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:49:55,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:49:55,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3698 [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-15 03:49:55,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:56,259 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:49:56,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:56,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:49:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:56,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:49:56,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:49:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:56,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500423579] [2020-10-15 03:49:56,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:56,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:49:56,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789783438] [2020-10-15 03:49:56,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:49:56,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:56,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:49:56,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:49:56,319 INFO L87 Difference]: Start difference. First operand 920 states and 1184 transitions. Second operand 8 states. [2020-10-15 03:49:56,817 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:50:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:01,280 INFO L93 Difference]: Finished difference Result 1730 states and 2358 transitions. [2020-10-15 03:50:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:50:01,281 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-15 03:50:01,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:01,286 INFO L225 Difference]: With dead ends: 1730 [2020-10-15 03:50:01,286 INFO L226 Difference]: Without dead ends: 1564 [2020-10-15 03:50:01,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:50:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2020-10-15 03:50:01,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 947. [2020-10-15 03:50:01,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-10-15 03:50:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1221 transitions. [2020-10-15 03:50:01,361 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1221 transitions. Word has length 69 [2020-10-15 03:50:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:01,362 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1221 transitions. [2020-10-15 03:50:01,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1221 transitions. [2020-10-15 03:50:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:50:01,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:01,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:01,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:50:01,365 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:01,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1210362564, now seen corresponding path program 1 times [2020-10-15 03:50:01,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:01,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096912183] [2020-10-15 03:50:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:01,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:01,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:01,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:03,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:06,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:06,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:50:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:06,903 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:50:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:06,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:06,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:06,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096912183] [2020-10-15 03:50:06,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:06,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:06,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694439930] [2020-10-15 03:50:06,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:06,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:06,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:06,962 INFO L87 Difference]: Start difference. First operand 947 states and 1221 transitions. Second operand 8 states. [2020-10-15 03:50:07,463 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2020-10-15 03:50:11,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:11,776 INFO L93 Difference]: Finished difference Result 1864 states and 2562 transitions. [2020-10-15 03:50:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:50:11,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:50:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:11,783 INFO L225 Difference]: With dead ends: 1864 [2020-10-15 03:50:11,783 INFO L226 Difference]: Without dead ends: 1680 [2020-10-15 03:50:11,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:50:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-15 03:50:11,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 958. [2020-10-15 03:50:11,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 958 states. [2020-10-15 03:50:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1236 transitions. [2020-10-15 03:50:11,861 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1236 transitions. Word has length 70 [2020-10-15 03:50:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:11,861 INFO L479 AbstractCegarLoop]: Abstraction has 958 states and 1236 transitions. [2020-10-15 03:50:11,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1236 transitions. [2020-10-15 03:50:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:50:11,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:11,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:11,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:50:11,864 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash -861040603, now seen corresponding path program 1 times [2020-10-15 03:50:11,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:11,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325353795] [2020-10-15 03:50:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:13,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:16,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:16,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:50:16,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:50:16,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:50:16,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:16,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:16,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:50:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:17,425 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:50:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:17,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:17,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:17,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:17,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:50:17,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:17,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:17,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:17,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:17,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:17,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325353795] [2020-10-15 03:50:17,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:17,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:50:17,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492327411] [2020-10-15 03:50:17,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:17,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:17,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:17,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:17,468 INFO L87 Difference]: Start difference. First operand 958 states and 1236 transitions. Second operand 8 states. [2020-10-15 03:50:17,985 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-15 03:50:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:22,904 INFO L93 Difference]: Finished difference Result 2560 states and 3549 transitions. [2020-10-15 03:50:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:50:22,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:50:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:22,913 INFO L225 Difference]: With dead ends: 2560 [2020-10-15 03:50:22,913 INFO L226 Difference]: Without dead ends: 2394 [2020-10-15 03:50:22,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:50:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2020-10-15 03:50:23,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 994. [2020-10-15 03:50:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 994 states. [2020-10-15 03:50:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1288 transitions. [2020-10-15 03:50:23,005 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1288 transitions. Word has length 70 [2020-10-15 03:50:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:23,006 INFO L479 AbstractCegarLoop]: Abstraction has 994 states and 1288 transitions. [2020-10-15 03:50:23,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1288 transitions. [2020-10-15 03:50:23,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:50:23,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:23,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:23,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:50:23,010 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:23,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:23,010 INFO L82 PathProgramCache]: Analyzing trace with hash 445784887, now seen corresponding path program 1 times [2020-10-15 03:50:23,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:23,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808364446] [2020-10-15 03:50:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:25,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:25,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:50:25,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:50:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2265 [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:50:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:25,866 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:50:25,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:25,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:25,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:25,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:25,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:25,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:50:25,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:25,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:25,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:25,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:25,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808364446] [2020-10-15 03:50:25,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:25,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:25,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509848538] [2020-10-15 03:50:25,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:25,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:25,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:25,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:25,912 INFO L87 Difference]: Start difference. First operand 994 states and 1288 transitions. Second operand 9 states. [2020-10-15 03:50:26,406 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:50:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:30,495 INFO L93 Difference]: Finished difference Result 2348 states and 3155 transitions. [2020-10-15 03:50:30,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:50:30,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:50:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:30,503 INFO L225 Difference]: With dead ends: 2348 [2020-10-15 03:50:30,503 INFO L226 Difference]: Without dead ends: 1544 [2020-10-15 03:50:30,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:50:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2020-10-15 03:50:30,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1182. [2020-10-15 03:50:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-10-15 03:50:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1556 transitions. [2020-10-15 03:50:30,630 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1556 transitions. Word has length 70 [2020-10-15 03:50:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:30,631 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1556 transitions. [2020-10-15 03:50:30,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:30,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1556 transitions. [2020-10-15 03:50:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:50:30,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:30,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:30,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:50:30,634 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:30,635 INFO L82 PathProgramCache]: Analyzing trace with hash 246803579, now seen corresponding path program 1 times [2020-10-15 03:50:30,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:30,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354318413] [2020-10-15 03:50:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 03:50:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:35,852 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 23 [2020-10-15 03:50:36,348 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:50:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:36,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:36,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:36,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:36,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354318413] [2020-10-15 03:50:36,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:36,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:36,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820898787] [2020-10-15 03:50:36,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:36,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:36,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:36,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:36,405 INFO L87 Difference]: Start difference. First operand 1182 states and 1556 transitions. Second operand 9 states. [2020-10-15 03:50:36,925 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-15 03:50:45,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:45,239 INFO L93 Difference]: Finished difference Result 9727 states and 14044 transitions. [2020-10-15 03:50:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 03:50:45,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:50:45,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:45,271 INFO L225 Difference]: With dead ends: 9727 [2020-10-15 03:50:45,271 INFO L226 Difference]: Without dead ends: 9306 [2020-10-15 03:50:45,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=249, Invalid=941, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 03:50:45,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9306 states. [2020-10-15 03:50:45,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9306 to 1428. [2020-10-15 03:50:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-15 03:50:45,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1852 transitions. [2020-10-15 03:50:45,454 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1852 transitions. Word has length 70 [2020-10-15 03:50:45,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:45,455 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 1852 transitions. [2020-10-15 03:50:45,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:45,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1852 transitions. [2020-10-15 03:50:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:50:45,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:45,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:45,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:50:45,459 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:45,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:45,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1224386729, now seen corresponding path program 1 times [2020-10-15 03:50:45,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:45,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157101995] [2020-10-15 03:50:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:45,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:50,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:50,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:50:50,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:50:50,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:51,063 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:50:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 03:50:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:50:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:51,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:50:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:51,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157101995] [2020-10-15 03:50:51,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:51,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:50:51,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258312687] [2020-10-15 03:50:51,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:51,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:51,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:51,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:51,106 INFO L87 Difference]: Start difference. First operand 1428 states and 1852 transitions. Second operand 9 states. [2020-10-15 03:50:51,651 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:50:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:56,003 INFO L93 Difference]: Finished difference Result 3085 states and 4236 transitions. [2020-10-15 03:50:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:50:56,003 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:50:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:56,012 INFO L225 Difference]: With dead ends: 3085 [2020-10-15 03:50:56,012 INFO L226 Difference]: Without dead ends: 2311 [2020-10-15 03:50:56,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:50:56,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2020-10-15 03:50:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 1654. [2020-10-15 03:50:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1654 states. [2020-10-15 03:50:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2207 transitions. [2020-10-15 03:50:56,277 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2207 transitions. Word has length 71 [2020-10-15 03:50:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:56,277 INFO L479 AbstractCegarLoop]: Abstraction has 1654 states and 2207 transitions. [2020-10-15 03:50:56,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2207 transitions. [2020-10-15 03:50:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:50:56,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:56,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:56,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:50:56,281 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash -966182785, now seen corresponding path program 1 times [2020-10-15 03:50:56,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:56,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821314353] [2020-10-15 03:50:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:56,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:01,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:51:01,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:01,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 03:51:01,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:01,851 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:51:01,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:01,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:01,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:01,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:01,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:51:01,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:01,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:01,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821314353] [2020-10-15 03:51:01,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:01,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:51:01,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148231737] [2020-10-15 03:51:01,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:51:01,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:01,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:51:01,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:51:01,913 INFO L87 Difference]: Start difference. First operand 1654 states and 2207 transitions. Second operand 6 states. [2020-10-15 03:51:02,445 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-15 03:51:05,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:05,239 INFO L93 Difference]: Finished difference Result 2862 states and 3962 transitions. [2020-10-15 03:51:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:51:05,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-15 03:51:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:05,249 INFO L225 Difference]: With dead ends: 2862 [2020-10-15 03:51:05,250 INFO L226 Difference]: Without dead ends: 1786 [2020-10-15 03:51:05,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:51:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2020-10-15 03:51:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1782. [2020-10-15 03:51:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1782 states. [2020-10-15 03:51:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2444 transitions. [2020-10-15 03:51:05,555 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2444 transitions. Word has length 71 [2020-10-15 03:51:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:05,555 INFO L479 AbstractCegarLoop]: Abstraction has 1782 states and 2444 transitions. [2020-10-15 03:51:05,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:51:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2444 transitions. [2020-10-15 03:51:05,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:51:05,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:05,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:05,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:51:05,558 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:05,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1042291112, now seen corresponding path program 1 times [2020-10-15 03:51:05,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:05,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414230385] [2020-10-15 03:51:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:05,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:05,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:06,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:07,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:09,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:10,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:10,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:10,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:51:10,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:11,169 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:51:11,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:11,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:11,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414230385] [2020-10-15 03:51:11,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:11,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:51:11,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420456938] [2020-10-15 03:51:11,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:51:11,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:11,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:51:11,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:51:11,219 INFO L87 Difference]: Start difference. First operand 1782 states and 2444 transitions. Second operand 10 states. [2020-10-15 03:51:11,762 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2020-10-15 03:51:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:19,992 INFO L93 Difference]: Finished difference Result 13175 states and 19204 transitions. [2020-10-15 03:51:19,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 03:51:19,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-15 03:51:19,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:20,014 INFO L225 Difference]: With dead ends: 13175 [2020-10-15 03:51:20,014 INFO L226 Difference]: Without dead ends: 12202 [2020-10-15 03:51:20,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-15 03:51:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12202 states. [2020-10-15 03:51:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12202 to 1802. [2020-10-15 03:51:20,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-15 03:51:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2472 transitions. [2020-10-15 03:51:20,577 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2472 transitions. Word has length 71 [2020-10-15 03:51:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:20,577 INFO L479 AbstractCegarLoop]: Abstraction has 1802 states and 2472 transitions. [2020-10-15 03:51:20,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:51:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2472 transitions. [2020-10-15 03:51:20,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:51:20,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:20,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:20,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:51:20,580 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:20,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:20,581 INFO L82 PathProgramCache]: Analyzing trace with hash 704596992, now seen corresponding path program 1 times [2020-10-15 03:51:20,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:20,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909904665] [2020-10-15 03:51:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:20,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:21,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:22,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:25,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:25,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:51:25,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:51:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-15 03:51:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:26,149 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:51:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:26,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:26,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:26,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:26,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909904665] [2020-10-15 03:51:26,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:26,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:51:26,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623730863] [2020-10-15 03:51:26,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:51:26,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:51:26,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:51:26,188 INFO L87 Difference]: Start difference. First operand 1802 states and 2472 transitions. Second operand 9 states. [2020-10-15 03:51:26,710 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:51:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:30,545 INFO L93 Difference]: Finished difference Result 3565 states and 5088 transitions. [2020-10-15 03:51:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:51:30,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:51:30,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:30,550 INFO L225 Difference]: With dead ends: 3565 [2020-10-15 03:51:30,550 INFO L226 Difference]: Without dead ends: 2721 [2020-10-15 03:51:30,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:51:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2020-10-15 03:51:31,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1800. [2020-10-15 03:51:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2020-10-15 03:51:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2468 transitions. [2020-10-15 03:51:31,028 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2468 transitions. Word has length 71 [2020-10-15 03:51:31,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:31,029 INFO L479 AbstractCegarLoop]: Abstraction has 1800 states and 2468 transitions. [2020-10-15 03:51:31,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:51:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2468 transitions. [2020-10-15 03:51:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:51:31,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:31,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:31,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:51:31,032 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:31,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1457417333, now seen corresponding path program 1 times [2020-10-15 03:51:31,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:31,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770862794] [2020-10-15 03:51:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:36,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:36,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:51:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:36,697 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:51:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:36,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:36,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:36,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:36,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:36,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:36,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770862794] [2020-10-15 03:51:36,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:36,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:51:36,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872436622] [2020-10-15 03:51:36,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:51:36,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:51:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:51:36,738 INFO L87 Difference]: Start difference. First operand 1800 states and 2468 transitions. Second operand 9 states. [2020-10-15 03:51:37,297 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2020-10-15 03:51:42,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:42,090 INFO L93 Difference]: Finished difference Result 6159 states and 8985 transitions. [2020-10-15 03:51:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:51:42,091 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:51:42,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:42,100 INFO L225 Difference]: With dead ends: 6159 [2020-10-15 03:51:42,100 INFO L226 Difference]: Without dead ends: 5295 [2020-10-15 03:51:42,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:51:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2020-10-15 03:51:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 1778. [2020-10-15 03:51:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1778 states. [2020-10-15 03:51:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2434 transitions. [2020-10-15 03:51:42,528 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2434 transitions. Word has length 72 [2020-10-15 03:51:42,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:42,528 INFO L479 AbstractCegarLoop]: Abstraction has 1778 states and 2434 transitions. [2020-10-15 03:51:42,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:51:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2434 transitions. [2020-10-15 03:51:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:51:42,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:42,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:42,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:51:42,531 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:42,531 INFO L82 PathProgramCache]: Analyzing trace with hash 264402803, now seen corresponding path program 1 times [2020-10-15 03:51:42,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:42,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374089534] [2020-10-15 03:51:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:42,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:43,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:44,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:44,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:47,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:47,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:51:47,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:51:47,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:48,275 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:51:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:48,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:48,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:48,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:48,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374089534] [2020-10-15 03:51:48,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:48,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:51:48,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507299048] [2020-10-15 03:51:48,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:51:48,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:48,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:51:48,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:51:48,351 INFO L87 Difference]: Start difference. First operand 1778 states and 2434 transitions. Second operand 10 states. [2020-10-15 03:51:48,894 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 307 [2020-10-15 03:51:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:56,807 INFO L93 Difference]: Finished difference Result 12369 states and 18215 transitions. [2020-10-15 03:51:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:51:56,807 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2020-10-15 03:51:56,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:56,822 INFO L225 Difference]: With dead ends: 12369 [2020-10-15 03:51:56,822 INFO L226 Difference]: Without dead ends: 11471 [2020-10-15 03:51:56,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:51:56,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11471 states. [2020-10-15 03:51:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11471 to 1718. [2020-10-15 03:51:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2020-10-15 03:51:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2342 transitions. [2020-10-15 03:51:57,402 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2342 transitions. Word has length 72 [2020-10-15 03:51:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:57,402 INFO L479 AbstractCegarLoop]: Abstraction has 1718 states and 2342 transitions. [2020-10-15 03:51:57,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:51:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2342 transitions. [2020-10-15 03:51:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-15 03:51:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:57,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:57,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:51:57,404 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1924154379, now seen corresponding path program 1 times [2020-10-15 03:51:57,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:57,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798160000] [2020-10-15 03:51:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:57,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:57,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:01,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:01,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4552 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:52:01,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:02,522 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:52:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:02,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:02,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:02,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:02,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:02,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798160000] [2020-10-15 03:52:02,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:02,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:52:02,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000513830] [2020-10-15 03:52:02,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:52:02,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:52:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:52:02,568 INFO L87 Difference]: Start difference. First operand 1718 states and 2342 transitions. Second operand 9 states. [2020-10-15 03:52:03,107 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 308 [2020-10-15 03:52:06,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:06,633 INFO L93 Difference]: Finished difference Result 3425 states and 4896 transitions. [2020-10-15 03:52:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:52:06,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-15 03:52:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:06,642 INFO L225 Difference]: With dead ends: 3425 [2020-10-15 03:52:06,642 INFO L226 Difference]: Without dead ends: 2572 [2020-10-15 03:52:06,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:52:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2020-10-15 03:52:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1707. [2020-10-15 03:52:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-10-15 03:52:07,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2325 transitions. [2020-10-15 03:52:07,069 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2325 transitions. Word has length 72 [2020-10-15 03:52:07,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:07,070 INFO L479 AbstractCegarLoop]: Abstraction has 1707 states and 2325 transitions. [2020-10-15 03:52:07,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:52:07,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2325 transitions. [2020-10-15 03:52:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 03:52:07,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:07,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:07,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:52:07,072 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash -655369999, now seen corresponding path program 1 times [2020-10-15 03:52:07,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:07,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659011181] [2020-10-15 03:52:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:10,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:10,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 03:52:10,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:52:10,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3656 [2020-10-15 03:52:10,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:10,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 03:52:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:52:10,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:52:10,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:11,271 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:52:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:11,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:11,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:11,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:11,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:11,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:52:11,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:11,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:11,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:11,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:11,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659011181] [2020-10-15 03:52:11,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:11,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:52:11,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950840410] [2020-10-15 03:52:11,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 03:52:11,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:11,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 03:52:11,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:52:11,342 INFO L87 Difference]: Start difference. First operand 1707 states and 2325 transitions. Second operand 7 states. [2020-10-15 03:52:11,899 WARN L193 SmtUtils]: Spent 501.00 ms on a formula simplification that was a NOOP. DAG size: 309 [2020-10-15 03:52:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:15,364 INFO L93 Difference]: Finished difference Result 5917 states and 8650 transitions. [2020-10-15 03:52:15,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 03:52:15,366 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-15 03:52:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:15,373 INFO L225 Difference]: With dead ends: 5917 [2020-10-15 03:52:15,373 INFO L226 Difference]: Without dead ends: 5075 [2020-10-15 03:52:15,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:52:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5075 states. [2020-10-15 03:52:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5075 to 2547. [2020-10-15 03:52:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2547 states. [2020-10-15 03:52:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3565 transitions. [2020-10-15 03:52:16,081 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3565 transitions. Word has length 85 [2020-10-15 03:52:16,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:16,081 INFO L479 AbstractCegarLoop]: Abstraction has 2547 states and 3565 transitions. [2020-10-15 03:52:16,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 03:52:16,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3565 transitions. [2020-10-15 03:52:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-15 03:52:16,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:16,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:16,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 03:52:16,085 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:16,085 INFO L82 PathProgramCache]: Analyzing trace with hash 497986820, now seen corresponding path program 1 times [2020-10-15 03:52:16,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:16,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523081402] [2020-10-15 03:52:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:16,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:52:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:52:18,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 03:52:18,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:19,232 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 301 [2020-10-15 03:52:19,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:19,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:19,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:19,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:19,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:19,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 03:52:19,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:19,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:19,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:52:19,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:19,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523081402] [2020-10-15 03:52:19,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:19,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:52:19,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354148470] [2020-10-15 03:52:19,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:52:19,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:19,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:52:19,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:52:19,287 INFO L87 Difference]: Start difference. First operand 2547 states and 3565 transitions. Second operand 6 states.