/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:08:11,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:08:11,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:08:11,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:08:11,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:08:11,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:08:11,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:08:11,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:08:11,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:08:11,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:08:11,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:08:11,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:08:11,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:08:11,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:08:11,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:08:11,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:08:11,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:08:11,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:08:11,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:08:11,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:08:11,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:08:11,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:08:11,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:08:11,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:08:11,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:08:11,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:08:11,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:08:11,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:08:11,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:08:11,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:08:11,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:08:11,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:08:11,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:08:11,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:08:11,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:08:11,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:08:11,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:08:11,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:08:11,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:08:11,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:08:11,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:08:11,859 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 [2020-10-14 09:08:11,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:08:11,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:08:11,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:08:11,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:08:11,883 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:08:11,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:08:11,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:08:11,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:08:11,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:08:11,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:08:11,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:08:11,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:08:11,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:08:11,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:08:11,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:08:11,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:08:11,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:08:11,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:08:11,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:08:11,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:08:11,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:08:11,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:08:11,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:08:11,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:08:11,888 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:08:12,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:08:12,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:08:12,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:08:12,239 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:08:12,239 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:08:12,240 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 09:08:12,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f09c7d213/5c06d5d1e9094481b9c2521050cad39f/FLAG65dfa81e2 [2020-10-14 09:08:12,821 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:08:12,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 09:08:12,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f09c7d213/5c06d5d1e9094481b9c2521050cad39f/FLAG65dfa81e2 [2020-10-14 09:08:13,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f09c7d213/5c06d5d1e9094481b9c2521050cad39f [2020-10-14 09:08:13,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:08:13,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:08:13,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:08:13,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:08:13,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:08:13,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:13,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12eafce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13, skipping insertion in model container [2020-10-14 09:08:13,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:13,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:08:13,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:08:13,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:08:13,787 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:08:13,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:08:13,994 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:08:13,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13 WrapperNode [2020-10-14 09:08:13,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:08:13,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:08:13,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:08:13,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:08:14,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (1/1) ... [2020-10-14 09:08:14,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:08:14,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:08:14,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:08:14,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:08:14,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (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 [2020-10-14 09:08:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:08:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:08:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:08:14,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:08:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:08:14,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:08:14,232 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:08:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:08:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:08:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:08:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:08:14,233 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:08:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:08:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:08:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:08:14,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:08:15,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:08:15,646 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:08:15,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:08:15 BoogieIcfgContainer [2020-10-14 09:08:15,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:08:15,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:08:15,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:08:15,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:08:15,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:08:13" (1/3) ... [2020-10-14 09:08:15,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4696ef71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:08:15, skipping insertion in model container [2020-10-14 09:08:15,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:08:13" (2/3) ... [2020-10-14 09:08:15,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4696ef71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:08:15, skipping insertion in model container [2020-10-14 09:08:15,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:08:15" (3/3) ... [2020-10-14 09:08:15,667 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-10-14 09:08:15,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:08:15,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:08:15,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:08:15,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:08:15,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:08:15,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:08:15,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:08:15,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:08:15,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:08:15,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:08:15,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:08:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states. [2020-10-14 09:08:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 09:08:15,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:15,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:15,778 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:15,784 INFO L82 PathProgramCache]: Analyzing trace with hash -941519177, now seen corresponding path program 1 times [2020-10-14 09:08:15,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:15,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896052096] [2020-10-14 09:08:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:16,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:17,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:18,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:21,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 09:08:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:08:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:08:21,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:21,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:08:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 09:08:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:08:21,408 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:21,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:21,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:21,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:21,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:21,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:08:21,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:21,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:21,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:21,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:21,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:21,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896052096] [2020-10-14 09:08:21,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:21,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:21,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264502107] [2020-10-14 09:08:21,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:21,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:21,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:21,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:21,492 INFO L87 Difference]: Start difference. First operand 429 states. Second operand 4 states. [2020-10-14 09:08:21,709 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 09:08:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:23,638 INFO L93 Difference]: Finished difference Result 1094 states and 1766 transitions. [2020-10-14 09:08:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:23,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-14 09:08:23,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:23,682 INFO L225 Difference]: With dead ends: 1094 [2020-10-14 09:08:23,682 INFO L226 Difference]: Without dead ends: 780 [2020-10-14 09:08:23,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:23,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-10-14 09:08:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 734. [2020-10-14 09:08:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-10-14 09:08:23,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1174 transitions. [2020-10-14 09:08:23,837 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1174 transitions. Word has length 111 [2020-10-14 09:08:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:23,838 INFO L479 AbstractCegarLoop]: Abstraction has 734 states and 1174 transitions. [2020-10-14 09:08:23,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1174 transitions. [2020-10-14 09:08:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-14 09:08:23,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:23,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:23,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:08:23,850 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:23,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash -371572459, now seen corresponding path program 1 times [2020-10-14 09:08:23,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:23,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769864690] [2020-10-14 09:08:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:24,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:25,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:28,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:28,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 09:08:28,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:08:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:08:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:28,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 09:08:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:08:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:29,226 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:29,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:29,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:29,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:29,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:29,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:29,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:08:29,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:29,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:29,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:29,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:29,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:29,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769864690] [2020-10-14 09:08:29,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:29,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:29,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203051886] [2020-10-14 09:08:29,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:29,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:29,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:29,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:29,298 INFO L87 Difference]: Start difference. First operand 734 states and 1174 transitions. Second operand 4 states. [2020-10-14 09:08:29,521 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 09:08:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:31,101 INFO L93 Difference]: Finished difference Result 1716 states and 2727 transitions. [2020-10-14 09:08:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:31,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-10-14 09:08:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:31,108 INFO L225 Difference]: With dead ends: 1716 [2020-10-14 09:08:31,109 INFO L226 Difference]: Without dead ends: 1270 [2020-10-14 09:08:31,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-10-14 09:08:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1180. [2020-10-14 09:08:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1180 states. [2020-10-14 09:08:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1872 transitions. [2020-10-14 09:08:31,191 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1872 transitions. Word has length 113 [2020-10-14 09:08:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:31,193 INFO L479 AbstractCegarLoop]: Abstraction has 1180 states and 1872 transitions. [2020-10-14 09:08:31,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1872 transitions. [2020-10-14 09:08:31,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 09:08:31,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:31,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:31,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:08:31,204 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1820152525, now seen corresponding path program 1 times [2020-10-14 09:08:31,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:31,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747591029] [2020-10-14 09:08:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:35,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:35,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:36,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:36,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 09:08:36,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:08:36,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:08:36,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:36,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:36,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-14 09:08:36,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 09:08:36,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:36,500 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:36,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:36,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:36,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:36,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:08:36,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:36,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:36,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:36,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747591029] [2020-10-14 09:08:36,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:36,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:36,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717151779] [2020-10-14 09:08:36,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:36,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:36,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:36,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:36,560 INFO L87 Difference]: Start difference. First operand 1180 states and 1872 transitions. Second operand 4 states. [2020-10-14 09:08:36,758 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 09:08:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:38,693 INFO L93 Difference]: Finished difference Result 2992 states and 4718 transitions. [2020-10-14 09:08:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:38,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-10-14 09:08:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:38,712 INFO L225 Difference]: With dead ends: 2992 [2020-10-14 09:08:38,718 INFO L226 Difference]: Without dead ends: 2158 [2020-10-14 09:08:38,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:38,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2020-10-14 09:08:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1980. [2020-10-14 09:08:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1980 states. [2020-10-14 09:08:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1980 states to 1980 states and 3110 transitions. [2020-10-14 09:08:38,880 INFO L78 Accepts]: Start accepts. Automaton has 1980 states and 3110 transitions. Word has length 115 [2020-10-14 09:08:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:38,880 INFO L479 AbstractCegarLoop]: Abstraction has 1980 states and 3110 transitions. [2020-10-14 09:08:38,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1980 states and 3110 transitions. [2020-10-14 09:08:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 09:08:38,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:38,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:38,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:08:38,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1522059713, now seen corresponding path program 1 times [2020-10-14 09:08:38,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:38,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053845594] [2020-10-14 09:08:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:38,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:39,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:43,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:43,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 09:08:43,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:08:43,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:08:43,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:43,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:43,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-14 09:08:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:08:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:44,138 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:44,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:08:44,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:44,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:44,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:44,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:44,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053845594] [2020-10-14 09:08:44,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:44,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:44,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663423008] [2020-10-14 09:08:44,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:44,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:44,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:44,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:44,202 INFO L87 Difference]: Start difference. First operand 1980 states and 3110 transitions. Second operand 4 states. [2020-10-14 09:08:44,431 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-14 09:08:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:46,743 INFO L93 Difference]: Finished difference Result 5268 states and 8226 transitions. [2020-10-14 09:08:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:46,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-14 09:08:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:46,763 INFO L225 Difference]: With dead ends: 5268 [2020-10-14 09:08:46,764 INFO L226 Difference]: Without dead ends: 3714 [2020-10-14 09:08:46,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:46,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2020-10-14 09:08:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3360. [2020-10-14 09:08:46,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3360 states. [2020-10-14 09:08:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 5212 transitions. [2020-10-14 09:08:46,958 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 5212 transitions. Word has length 117 [2020-10-14 09:08:46,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:46,960 INFO L479 AbstractCegarLoop]: Abstraction has 3360 states and 5212 transitions. [2020-10-14 09:08:46,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:08:46,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 5212 transitions. [2020-10-14 09:08:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-14 09:08:46,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:46,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:46,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:08:46,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:46,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:46,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1487816421, now seen corresponding path program 1 times [2020-10-14 09:08:46,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:46,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329762852] [2020-10-14 09:08:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:51,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:51,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 09:08:51,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:08:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:08:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:52,200 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:52,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:52,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:08:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:52,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:08:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:52,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329762852] [2020-10-14 09:08:52,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:52,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:08:52,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451503777] [2020-10-14 09:08:52,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:08:52,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:52,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:08:52,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:08:52,248 INFO L87 Difference]: Start difference. First operand 3360 states and 5212 transitions. Second operand 5 states. [2020-10-14 09:08:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:08:53,763 INFO L93 Difference]: Finished difference Result 4146 states and 6413 transitions. [2020-10-14 09:08:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:08:53,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-14 09:08:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:08:53,782 INFO L225 Difference]: With dead ends: 4146 [2020-10-14 09:08:53,783 INFO L226 Difference]: Without dead ends: 3360 [2020-10-14 09:08:53,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:08:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-10-14 09:08:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3360. [2020-10-14 09:08:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3360 states. [2020-10-14 09:08:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 5180 transitions. [2020-10-14 09:08:53,949 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 5180 transitions. Word has length 119 [2020-10-14 09:08:53,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:08:53,950 INFO L479 AbstractCegarLoop]: Abstraction has 3360 states and 5180 transitions. [2020-10-14 09:08:53,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:08:53,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 5180 transitions. [2020-10-14 09:08:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 09:08:53,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:08:53,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:08:53,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:08:53,961 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:08:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:08:53,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1565961225, now seen corresponding path program 1 times [2020-10-14 09:08:53,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:08:53,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4634981] [2020-10-14 09:08:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:08:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:53,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 09:08:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:08:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:08:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:58,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:08:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:08:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 09:08:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:59,138 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:08:59,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:08:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:08:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:08:59,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:08:59,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:08:59,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:08:59,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:08:59,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:08:59,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:08:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:08:59,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:08:59,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:08:59,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:08:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:08:59,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4634981] [2020-10-14 09:08:59,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:08:59,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:08:59,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223883903] [2020-10-14 09:08:59,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:08:59,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:08:59,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:08:59,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:08:59,188 INFO L87 Difference]: Start difference. First operand 3360 states and 5180 transitions. Second operand 4 states. [2020-10-14 09:09:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:01,147 INFO L93 Difference]: Finished difference Result 8484 states and 12990 transitions. [2020-10-14 09:09:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:09:01,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-14 09:09:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:01,178 INFO L225 Difference]: With dead ends: 8484 [2020-10-14 09:09:01,178 INFO L226 Difference]: Without dead ends: 5947 [2020-10-14 09:09:01,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5947 states. [2020-10-14 09:09:01,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5947 to 5945. [2020-10-14 09:09:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5945 states. [2020-10-14 09:09:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 9019 transitions. [2020-10-14 09:09:01,543 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 9019 transitions. Word has length 120 [2020-10-14 09:09:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:01,545 INFO L479 AbstractCegarLoop]: Abstraction has 5945 states and 9019 transitions. [2020-10-14 09:09:01,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 9019 transitions. [2020-10-14 09:09:01,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:09:01,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:01,558 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:01,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:09:01,559 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:01,559 INFO L82 PathProgramCache]: Analyzing trace with hash -149996093, now seen corresponding path program 1 times [2020-10-14 09:09:01,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:01,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038148053] [2020-10-14 09:09:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:01,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:01,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:01,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:01,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:01,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:09:01,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:09:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 09:09:01,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:02,205 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:02,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:02,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:02,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:09:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:02,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:02,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038148053] [2020-10-14 09:09:02,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:02,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:02,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468318443] [2020-10-14 09:09:02,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:02,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:02,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:02,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:02,293 INFO L87 Difference]: Start difference. First operand 5945 states and 9019 transitions. Second operand 4 states. [2020-10-14 09:09:02,474 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 09:09:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:04,955 INFO L93 Difference]: Finished difference Result 11297 states and 17074 transitions. [2020-10-14 09:09:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:04,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 09:09:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:04,990 INFO L225 Difference]: With dead ends: 11297 [2020-10-14 09:09:04,990 INFO L226 Difference]: Without dead ends: 7487 [2020-10-14 09:09:05,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:05,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2020-10-14 09:09:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7093. [2020-10-14 09:09:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-14 09:09:05,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10721 transitions. [2020-10-14 09:09:05,321 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10721 transitions. Word has length 123 [2020-10-14 09:09:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:05,322 INFO L479 AbstractCegarLoop]: Abstraction has 7093 states and 10721 transitions. [2020-10-14 09:09:05,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10721 transitions. [2020-10-14 09:09:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-14 09:09:05,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:05,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:05,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:09:05,342 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash -373444021, now seen corresponding path program 1 times [2020-10-14 09:09:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:05,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312309196] [2020-10-14 09:09:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:05,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:05,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:05,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 09:09:05,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 09:09:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:09:05,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:05,938 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:05,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:05,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:09:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:05,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:05,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312309196] [2020-10-14 09:09:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:09:05,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129048244] [2020-10-14 09:09:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:09:05,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:05,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:09:05,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:05,969 INFO L87 Difference]: Start difference. First operand 7093 states and 10721 transitions. Second operand 5 states. [2020-10-14 09:09:07,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:07,621 INFO L93 Difference]: Finished difference Result 14156 states and 21388 transitions. [2020-10-14 09:09:07,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:09:07,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-14 09:09:07,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:07,637 INFO L225 Difference]: With dead ends: 14156 [2020-10-14 09:09:07,637 INFO L226 Difference]: Without dead ends: 7093 [2020-10-14 09:09:07,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:09:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2020-10-14 09:09:07,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 7093. [2020-10-14 09:09:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7093 states. [2020-10-14 09:09:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 10697 transitions. [2020-10-14 09:09:07,953 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 10697 transitions. Word has length 124 [2020-10-14 09:09:07,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:07,953 INFO L479 AbstractCegarLoop]: Abstraction has 7093 states and 10697 transitions. [2020-10-14 09:09:07,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:09:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 10697 transitions. [2020-10-14 09:09:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 09:09:07,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:07,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:07,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:09:07,970 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:07,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:07,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1326783306, now seen corresponding path program 1 times [2020-10-14 09:09:07,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:07,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819559397] [2020-10-14 09:09:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:13,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:13,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 09:09:13,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:09:13,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:13,199 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:13,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:13,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:13,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:09:13,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:13,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:13,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:09:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:13,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819559397] [2020-10-14 09:09:13,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:13,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:13,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214766890] [2020-10-14 09:09:13,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:13,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:13,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:13,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:13,257 INFO L87 Difference]: Start difference. First operand 7093 states and 10697 transitions. Second operand 4 states. [2020-10-14 09:09:13,460 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:15,200 INFO L93 Difference]: Finished difference Result 12758 states and 19252 transitions. [2020-10-14 09:09:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:15,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-14 09:09:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:15,220 INFO L225 Difference]: With dead ends: 12758 [2020-10-14 09:09:15,220 INFO L226 Difference]: Without dead ends: 6868 [2020-10-14 09:09:15,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2020-10-14 09:09:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6866. [2020-10-14 09:09:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6866 states. [2020-10-14 09:09:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 10364 transitions. [2020-10-14 09:09:15,553 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 10364 transitions. Word has length 147 [2020-10-14 09:09:15,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:15,553 INFO L479 AbstractCegarLoop]: Abstraction has 6866 states and 10364 transitions. [2020-10-14 09:09:15,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:15,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 10364 transitions. [2020-10-14 09:09:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 09:09:15,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:15,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:15,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:09:15,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:15,570 INFO L82 PathProgramCache]: Analyzing trace with hash -963494415, now seen corresponding path program 1 times [2020-10-14 09:09:15,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:15,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287693069] [2020-10-14 09:09:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:15,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:17,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:20,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:20,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-14 09:09:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:09:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:20,856 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:20,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:20,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:20,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:20,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:20,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:20,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:09:20,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:20,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:20,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:20,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:09:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:20,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287693069] [2020-10-14 09:09:20,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:20,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:20,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319928914] [2020-10-14 09:09:20,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:20,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:20,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:20,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:20,908 INFO L87 Difference]: Start difference. First operand 6866 states and 10364 transitions. Second operand 4 states. [2020-10-14 09:09:21,065 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:22,946 INFO L93 Difference]: Finished difference Result 11420 states and 17212 transitions. [2020-10-14 09:09:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:22,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-14 09:09:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:22,959 INFO L225 Difference]: With dead ends: 11420 [2020-10-14 09:09:22,959 INFO L226 Difference]: Without dead ends: 6199 [2020-10-14 09:09:22,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6199 states. [2020-10-14 09:09:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6199 to 6197. [2020-10-14 09:09:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6197 states. [2020-10-14 09:09:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 9344 transitions. [2020-10-14 09:09:23,248 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 9344 transitions. Word has length 148 [2020-10-14 09:09:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:23,249 INFO L479 AbstractCegarLoop]: Abstraction has 6197 states and 9344 transitions. [2020-10-14 09:09:23,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 9344 transitions. [2020-10-14 09:09:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 09:09:23,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:23,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:23,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:09:23,268 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1984361189, now seen corresponding path program 1 times [2020-10-14 09:09:23,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:23,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995814379] [2020-10-14 09:09:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:23,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:28,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:09:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:09:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:28,450 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:28,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:28,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:28,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:09:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:28,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:28,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995814379] [2020-10-14 09:09:28,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:28,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:28,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857542988] [2020-10-14 09:09:28,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:28,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:28,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:28,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:28,486 INFO L87 Difference]: Start difference. First operand 6197 states and 9344 transitions. Second operand 4 states. [2020-10-14 09:09:28,648 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:30,411 INFO L93 Difference]: Finished difference Result 11041 states and 16652 transitions. [2020-10-14 09:09:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:30,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-14 09:09:30,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:30,424 INFO L225 Difference]: With dead ends: 11041 [2020-10-14 09:09:30,424 INFO L226 Difference]: Without dead ends: 5950 [2020-10-14 09:09:30,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5950 states. [2020-10-14 09:09:30,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5950 to 5948. [2020-10-14 09:09:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5948 states. [2020-10-14 09:09:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 8968 transitions. [2020-10-14 09:09:30,846 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 8968 transitions. Word has length 149 [2020-10-14 09:09:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:30,846 INFO L479 AbstractCegarLoop]: Abstraction has 5948 states and 8968 transitions. [2020-10-14 09:09:30,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 8968 transitions. [2020-10-14 09:09:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:09:30,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:30,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:30,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:09:30,858 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:30,859 INFO L82 PathProgramCache]: Analyzing trace with hash -997837795, now seen corresponding path program 1 times [2020-10-14 09:09:30,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:30,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584769150] [2020-10-14 09:09:30,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:30,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:30,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:30,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:31,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:34,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:35,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 09:09:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:09:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:36,060 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:36,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584769150] [2020-10-14 09:09:36,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:36,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:36,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200255455] [2020-10-14 09:09:36,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:36,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:36,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:36,095 INFO L87 Difference]: Start difference. First operand 5948 states and 8968 transitions. Second operand 4 states. [2020-10-14 09:09:36,266 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:38,122 INFO L93 Difference]: Finished difference Result 16126 states and 24179 transitions. [2020-10-14 09:09:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:38,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:09:38,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:38,139 INFO L225 Difference]: With dead ends: 16126 [2020-10-14 09:09:38,139 INFO L226 Difference]: Without dead ends: 10764 [2020-10-14 09:09:38,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10764 states. [2020-10-14 09:09:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10764 to 10739. [2020-10-14 09:09:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10739 states. [2020-10-14 09:09:38,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10739 states to 10739 states and 15946 transitions. [2020-10-14 09:09:38,638 INFO L78 Accepts]: Start accepts. Automaton has 10739 states and 15946 transitions. Word has length 150 [2020-10-14 09:09:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:38,639 INFO L479 AbstractCegarLoop]: Abstraction has 10739 states and 15946 transitions. [2020-10-14 09:09:38,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 10739 states and 15946 transitions. [2020-10-14 09:09:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:09:38,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:38,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:38,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:09:38,658 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:38,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2095892620, now seen corresponding path program 1 times [2020-10-14 09:09:38,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:38,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285953600] [2020-10-14 09:09:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:43,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:43,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 09:09:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:09:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:43,850 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:43,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:43,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:43,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:43,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:09:43,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:43,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:43,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:43,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:43,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285953600] [2020-10-14 09:09:43,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:43,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:43,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721953028] [2020-10-14 09:09:43,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:43,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:43,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:43,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:43,899 INFO L87 Difference]: Start difference. First operand 10739 states and 15946 transitions. Second operand 4 states. [2020-10-14 09:09:44,067 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:46,251 INFO L93 Difference]: Finished difference Result 29853 states and 44090 transitions. [2020-10-14 09:09:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:46,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:09:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:46,282 INFO L225 Difference]: With dead ends: 29853 [2020-10-14 09:09:46,282 INFO L226 Difference]: Without dead ends: 19602 [2020-10-14 09:09:46,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19602 states. [2020-10-14 09:09:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19602 to 19533. [2020-10-14 09:09:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19533 states. [2020-10-14 09:09:47,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19533 states to 19533 states and 28542 transitions. [2020-10-14 09:09:47,051 INFO L78 Accepts]: Start accepts. Automaton has 19533 states and 28542 transitions. Word has length 150 [2020-10-14 09:09:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:47,052 INFO L479 AbstractCegarLoop]: Abstraction has 19533 states and 28542 transitions. [2020-10-14 09:09:47,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 19533 states and 28542 transitions. [2020-10-14 09:09:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:09:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:47,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:47,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:09:47,077 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -459506770, now seen corresponding path program 1 times [2020-10-14 09:09:47,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:47,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070631095] [2020-10-14 09:09:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:47,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:47,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:51,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:52,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 09:09:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:52,260 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:09:52,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:09:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:52,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:09:52,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:09:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:09:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:09:52,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070631095] [2020-10-14 09:09:52,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:09:52,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:09:52,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013271661] [2020-10-14 09:09:52,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:09:52,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:09:52,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:09:52,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:09:52,302 INFO L87 Difference]: Start difference. First operand 19533 states and 28542 transitions. Second operand 4 states. [2020-10-14 09:09:52,468 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:09:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:09:55,308 INFO L93 Difference]: Finished difference Result 54671 states and 79456 transitions. [2020-10-14 09:09:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:09:55,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:09:55,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:09:55,350 INFO L225 Difference]: With dead ends: 54671 [2020-10-14 09:09:55,350 INFO L226 Difference]: Without dead ends: 35358 [2020-10-14 09:09:55,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:09:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35358 states. [2020-10-14 09:09:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35358 to 35239. [2020-10-14 09:09:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35239 states. [2020-10-14 09:09:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35239 states to 35239 states and 50687 transitions. [2020-10-14 09:09:56,578 INFO L78 Accepts]: Start accepts. Automaton has 35239 states and 50687 transitions. Word has length 150 [2020-10-14 09:09:56,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:09:56,578 INFO L479 AbstractCegarLoop]: Abstraction has 35239 states and 50687 transitions. [2020-10-14 09:09:56,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:09:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35239 states and 50687 transitions. [2020-10-14 09:09:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 09:09:56,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:09:56,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:09:56,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:09:56,610 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:09:56,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:09:56,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1686085563, now seen corresponding path program 1 times [2020-10-14 09:09:56,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:09:56,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476053881] [2020-10-14 09:09:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:09:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:09:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:57,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:09:57,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:01,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 09:10:01,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-14 09:10:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 09:10:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:01,799 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:01,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:01,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:01,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:01,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:01,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 09:10:01,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:01,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:01,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:01,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:01,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476053881] [2020-10-14 09:10:01,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:01,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:01,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846582477] [2020-10-14 09:10:01,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:01,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:01,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:01,827 INFO L87 Difference]: Start difference. First operand 35239 states and 50687 transitions. Second operand 4 states. [2020-10-14 09:10:01,984 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:10:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:05,145 INFO L93 Difference]: Finished difference Result 65558 states and 94373 transitions. [2020-10-14 09:10:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:10:05,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 09:10:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:05,180 INFO L225 Difference]: With dead ends: 65558 [2020-10-14 09:10:05,180 INFO L226 Difference]: Without dead ends: 34807 [2020-10-14 09:10:05,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:05,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34807 states. [2020-10-14 09:10:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34807 to 34805. [2020-10-14 09:10:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34805 states. [2020-10-14 09:10:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34805 states to 34805 states and 50079 transitions. [2020-10-14 09:10:06,371 INFO L78 Accepts]: Start accepts. Automaton has 34805 states and 50079 transitions. Word has length 150 [2020-10-14 09:10:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:06,371 INFO L479 AbstractCegarLoop]: Abstraction has 34805 states and 50079 transitions. [2020-10-14 09:10:06,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 34805 states and 50079 transitions. [2020-10-14 09:10:06,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:06,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:06,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:06,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:10:06,409 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:06,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:06,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1843452334, now seen corresponding path program 1 times [2020-10-14 09:10:06,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:06,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410513491] [2020-10-14 09:10:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:06,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:06,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:08,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:08,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:11,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:11,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 09:10:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 09:10:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:11,599 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:11,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:11,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:11,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:11,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:11,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:11,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:11,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410513491] [2020-10-14 09:10:11,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:11,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:11,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221509851] [2020-10-14 09:10:11,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:11,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:11,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:11,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:11,636 INFO L87 Difference]: Start difference. First operand 34805 states and 50079 transitions. Second operand 4 states. [2020-10-14 09:10:11,805 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 09:10:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:15,318 INFO L93 Difference]: Finished difference Result 97283 states and 139031 transitions. [2020-10-14 09:10:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:10:15,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 09:10:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:15,392 INFO L225 Difference]: With dead ends: 97283 [2020-10-14 09:10:15,393 INFO L226 Difference]: Without dead ends: 62056 [2020-10-14 09:10:15,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2020-10-14 09:10:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 61823. [2020-10-14 09:10:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61823 states. [2020-10-14 09:10:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61823 states to 61823 states and 87305 transitions. [2020-10-14 09:10:17,871 INFO L78 Accepts]: Start accepts. Automaton has 61823 states and 87305 transitions. Word has length 151 [2020-10-14 09:10:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:17,872 INFO L479 AbstractCegarLoop]: Abstraction has 61823 states and 87305 transitions. [2020-10-14 09:10:17,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 61823 states and 87305 transitions. [2020-10-14 09:10:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:17,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:17,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:17,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 09:10:17,918 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1073175760, now seen corresponding path program 1 times [2020-10-14 09:10:17,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:17,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161059013] [2020-10-14 09:10:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:17,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:18,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:18,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:22,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 09:10:22,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:10:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:23,112 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:23,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:23,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:23,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:23,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:23,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161059013] [2020-10-14 09:10:23,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:23,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:23,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279646457] [2020-10-14 09:10:23,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:23,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:23,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:23,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:23,141 INFO L87 Difference]: Start difference. First operand 61823 states and 87305 transitions. Second operand 4 states. [2020-10-14 09:10:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:26,018 INFO L93 Difference]: Finished difference Result 97369 states and 137702 transitions. [2020-10-14 09:10:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:10:26,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 09:10:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:26,063 INFO L225 Difference]: With dead ends: 97369 [2020-10-14 09:10:26,063 INFO L226 Difference]: Without dead ends: 41715 [2020-10-14 09:10:26,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41715 states. [2020-10-14 09:10:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41715 to 41713. [2020-10-14 09:10:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41713 states. [2020-10-14 09:10:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41713 states to 41713 states and 58567 transitions. [2020-10-14 09:10:27,834 INFO L78 Accepts]: Start accepts. Automaton has 41713 states and 58567 transitions. Word has length 151 [2020-10-14 09:10:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:27,834 INFO L479 AbstractCegarLoop]: Abstraction has 41713 states and 58567 transitions. [2020-10-14 09:10:27,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 41713 states and 58567 transitions. [2020-10-14 09:10:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:27,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:27,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:27,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 09:10:27,857 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash -611206236, now seen corresponding path program 1 times [2020-10-14 09:10:27,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:27,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380757668] [2020-10-14 09:10:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:27,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:31,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:32,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:32,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:32,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-14 09:10:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:10:32,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:32,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:10:32,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:10:32,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:33,045 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:33,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:33,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:33,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:33,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380757668] [2020-10-14 09:10:33,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:33,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:33,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848918330] [2020-10-14 09:10:33,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:33,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:33,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:33,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:33,074 INFO L87 Difference]: Start difference. First operand 41713 states and 58567 transitions. Second operand 4 states. [2020-10-14 09:10:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:35,471 INFO L93 Difference]: Finished difference Result 56852 states and 79811 transitions. [2020-10-14 09:10:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:10:35,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 09:10:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:35,493 INFO L225 Difference]: With dead ends: 56852 [2020-10-14 09:10:35,494 INFO L226 Difference]: Without dead ends: 22231 [2020-10-14 09:10:35,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:35,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22231 states. [2020-10-14 09:10:36,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22231 to 22229. [2020-10-14 09:10:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22229 states. [2020-10-14 09:10:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22229 states to 22229 states and 30900 transitions. [2020-10-14 09:10:36,295 INFO L78 Accepts]: Start accepts. Automaton has 22229 states and 30900 transitions. Word has length 151 [2020-10-14 09:10:36,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:36,295 INFO L479 AbstractCegarLoop]: Abstraction has 22229 states and 30900 transitions. [2020-10-14 09:10:36,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 22229 states and 30900 transitions. [2020-10-14 09:10:36,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:36,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:36,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:36,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 09:10:36,310 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:36,310 INFO L82 PathProgramCache]: Analyzing trace with hash 626637608, now seen corresponding path program 1 times [2020-10-14 09:10:36,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:36,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393459909] [2020-10-14 09:10:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:38,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:40,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:41,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:41,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 43 [2020-10-14 09:10:41,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 09:10:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:41,509 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:41,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:41,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:41,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:10:41,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:41,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:41,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:41,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393459909] [2020-10-14 09:10:41,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:41,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:41,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944687692] [2020-10-14 09:10:41,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:41,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:41,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:41,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:41,541 INFO L87 Difference]: Start difference. First operand 22229 states and 30900 transitions. Second operand 4 states. [2020-10-14 09:10:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:43,221 INFO L93 Difference]: Finished difference Result 30290 states and 42103 transitions. [2020-10-14 09:10:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:10:43,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 09:10:43,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:43,235 INFO L225 Difference]: With dead ends: 30290 [2020-10-14 09:10:43,235 INFO L226 Difference]: Without dead ends: 11637 [2020-10-14 09:10:43,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2020-10-14 09:10:43,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11635. [2020-10-14 09:10:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11635 states. [2020-10-14 09:10:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11635 states to 11635 states and 16016 transitions. [2020-10-14 09:10:43,675 INFO L78 Accepts]: Start accepts. Automaton has 11635 states and 16016 transitions. Word has length 151 [2020-10-14 09:10:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:43,675 INFO L479 AbstractCegarLoop]: Abstraction has 11635 states and 16016 transitions. [2020-10-14 09:10:43,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11635 states and 16016 transitions. [2020-10-14 09:10:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:43,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:43,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:43,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 09:10:43,683 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:43,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:43,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1427263752, now seen corresponding path program 1 times [2020-10-14 09:10:43,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:43,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724039296] [2020-10-14 09:10:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:43,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:43,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:44,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:46,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 41 [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:48,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:10:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 09:10:48,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:10:48,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:48,865 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:48,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:48,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724039296] [2020-10-14 09:10:48,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:48,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:10:48,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76057625] [2020-10-14 09:10:48,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:10:48,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:48,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:10:48,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:48,894 INFO L87 Difference]: Start difference. First operand 11635 states and 16016 transitions. Second operand 4 states. [2020-10-14 09:10:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:50,236 INFO L93 Difference]: Finished difference Result 15785 states and 21733 transitions. [2020-10-14 09:10:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:10:50,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 09:10:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:50,242 INFO L225 Difference]: With dead ends: 15785 [2020-10-14 09:10:50,242 INFO L226 Difference]: Without dead ends: 5996 [2020-10-14 09:10:50,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:10:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2020-10-14 09:10:50,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5994. [2020-10-14 09:10:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5994 states. [2020-10-14 09:10:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 8167 transitions. [2020-10-14 09:10:50,468 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 8167 transitions. Word has length 151 [2020-10-14 09:10:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:50,468 INFO L479 AbstractCegarLoop]: Abstraction has 5994 states and 8167 transitions. [2020-10-14 09:10:50,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:10:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 8167 transitions. [2020-10-14 09:10:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 09:10:50,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:50,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:50,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 09:10:50,472 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:50,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2016482404, now seen corresponding path program 1 times [2020-10-14 09:10:50,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:50,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385426312] [2020-10-14 09:10:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:50,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:54,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 09:10:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 55 [2020-10-14 09:10:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:10:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:55,660 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:10:55,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:10:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:10:55,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:10:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:10:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:10:55,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385426312] [2020-10-14 09:10:55,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:10:55,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:10:55,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215251882] [2020-10-14 09:10:55,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:10:55,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:10:55,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:10:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:10:55,686 INFO L87 Difference]: Start difference. First operand 5994 states and 8167 transitions. Second operand 5 states. [2020-10-14 09:10:57,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:10:57,175 INFO L93 Difference]: Finished difference Result 7476 states and 10196 transitions. [2020-10-14 09:10:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:10:57,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2020-10-14 09:10:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:10:57,186 INFO L225 Difference]: With dead ends: 7476 [2020-10-14 09:10:57,187 INFO L226 Difference]: Without dead ends: 7474 [2020-10-14 09:10:57,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:10:57,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2020-10-14 09:10:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 6058. [2020-10-14 09:10:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6058 states. [2020-10-14 09:10:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6058 states to 6058 states and 8231 transitions. [2020-10-14 09:10:57,458 INFO L78 Accepts]: Start accepts. Automaton has 6058 states and 8231 transitions. Word has length 151 [2020-10-14 09:10:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:10:57,459 INFO L479 AbstractCegarLoop]: Abstraction has 6058 states and 8231 transitions. [2020-10-14 09:10:57,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:10:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6058 states and 8231 transitions. [2020-10-14 09:10:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 09:10:57,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:10:57,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:10:57,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 09:10:57,463 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:10:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:10:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1923174977, now seen corresponding path program 1 times [2020-10-14 09:10:57,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:10:57,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369280229] [2020-10-14 09:10:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:10:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:10:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:58,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:10:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:02,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 09:11:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:11:02,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:02,635 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:02,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:02,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:02,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:02,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369280229] [2020-10-14 09:11:02,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:02,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:02,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128924027] [2020-10-14 09:11:02,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:02,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:02,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:02,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:02,662 INFO L87 Difference]: Start difference. First operand 6058 states and 8231 transitions. Second operand 4 states. [2020-10-14 09:11:02,815 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 09:11:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:04,357 INFO L93 Difference]: Finished difference Result 12826 states and 17299 transitions. [2020-10-14 09:11:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:11:04,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 09:11:04,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:04,367 INFO L225 Difference]: With dead ends: 12826 [2020-10-14 09:11:04,367 INFO L226 Difference]: Without dead ends: 7482 [2020-10-14 09:11:04,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:11:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2020-10-14 09:11:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 7338. [2020-10-14 09:11:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7338 states. [2020-10-14 09:11:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 9863 transitions. [2020-10-14 09:11:04,676 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 9863 transitions. Word has length 152 [2020-10-14 09:11:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:04,676 INFO L479 AbstractCegarLoop]: Abstraction has 7338 states and 9863 transitions. [2020-10-14 09:11:04,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:04,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 9863 transitions. [2020-10-14 09:11:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 09:11:04,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:04,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:04,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 09:11:04,682 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1232633757, now seen corresponding path program 1 times [2020-10-14 09:11:04,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:04,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796726235] [2020-10-14 09:11:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:04,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:05,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:09,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:11:09,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 09:11:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:09,935 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:09,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:11:09,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:09,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:11:09,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796726235] [2020-10-14 09:11:09,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:09,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:11:09,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852997198] [2020-10-14 09:11:09,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:09,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:10,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:10,000 INFO L87 Difference]: Start difference. First operand 7338 states and 9863 transitions. Second operand 6 states. [2020-10-14 09:11:10,155 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 09:11:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:11,586 INFO L93 Difference]: Finished difference Result 11717 states and 15733 transitions. [2020-10-14 09:11:11,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:11,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-14 09:11:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:11,595 INFO L225 Difference]: With dead ends: 11717 [2020-10-14 09:11:11,595 INFO L226 Difference]: Without dead ends: 7322 [2020-10-14 09:11:11,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 09:11:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2020-10-14 09:11:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 6634. [2020-10-14 09:11:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6634 states. [2020-10-14 09:11:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6634 states to 6634 states and 8887 transitions. [2020-10-14 09:11:11,907 INFO L78 Accepts]: Start accepts. Automaton has 6634 states and 8887 transitions. Word has length 153 [2020-10-14 09:11:11,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:11,908 INFO L479 AbstractCegarLoop]: Abstraction has 6634 states and 8887 transitions. [2020-10-14 09:11:11,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:11,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6634 states and 8887 transitions. [2020-10-14 09:11:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 09:11:11,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:11,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:11,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 09:11:11,914 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:11,914 INFO L82 PathProgramCache]: Analyzing trace with hash 60396143, now seen corresponding path program 1 times [2020-10-14 09:11:11,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:11,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470522213] [2020-10-14 09:11:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:11,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:16,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 09:11:16,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 72 [2020-10-14 09:11:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:11:16,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:16,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:11:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 09:11:16,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 09:11:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:11:17,150 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:17,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:17,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:17,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 09:11:17,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470522213] [2020-10-14 09:11:17,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:17,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 09:11:17,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438844830] [2020-10-14 09:11:17,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:11:17,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:11:17,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:11:17,245 INFO L87 Difference]: Start difference. First operand 6634 states and 8887 transitions. Second operand 7 states. [2020-10-14 09:11:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:19,767 INFO L93 Difference]: Finished difference Result 10661 states and 14097 transitions. [2020-10-14 09:11:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:19,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-14 09:11:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:19,775 INFO L225 Difference]: With dead ends: 10661 [2020-10-14 09:11:19,775 INFO L226 Difference]: Without dead ends: 6895 [2020-10-14 09:11:19,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:11:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2020-10-14 09:11:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 6730. [2020-10-14 09:11:20,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6730 states. [2020-10-14 09:11:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 8879 transitions. [2020-10-14 09:11:20,122 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 8879 transitions. Word has length 174 [2020-10-14 09:11:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:20,122 INFO L479 AbstractCegarLoop]: Abstraction has 6730 states and 8879 transitions. [2020-10-14 09:11:20,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:11:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 8879 transitions. [2020-10-14 09:11:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 09:11:20,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:20,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:20,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 09:11:20,128 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:20,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1056773790, now seen corresponding path program 1 times [2020-10-14 09:11:20,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:20,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204891332] [2020-10-14 09:11:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:20,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:25,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 09:11:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 09:11:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:25,308 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:25,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:25,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:25,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:25,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 09:11:25,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204891332] [2020-10-14 09:11:25,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:25,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 09:11:25,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646865834] [2020-10-14 09:11:25,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 09:11:25,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:25,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 09:11:25,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:11:25,398 INFO L87 Difference]: Start difference. First operand 6730 states and 8879 transitions. Second operand 6 states. [2020-10-14 09:11:25,549 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 09:11:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:28,424 INFO L93 Difference]: Finished difference Result 18706 states and 24695 transitions. [2020-10-14 09:11:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 09:11:28,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-10-14 09:11:28,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:28,443 INFO L225 Difference]: With dead ends: 18706 [2020-10-14 09:11:28,443 INFO L226 Difference]: Without dead ends: 14091 [2020-10-14 09:11:28,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 09:11:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14091 states. [2020-10-14 09:11:29,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14091 to 10061. [2020-10-14 09:11:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10061 states. [2020-10-14 09:11:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10061 states to 10061 states and 13336 transitions. [2020-10-14 09:11:29,025 INFO L78 Accepts]: Start accepts. Automaton has 10061 states and 13336 transitions. Word has length 178 [2020-10-14 09:11:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:29,025 INFO L479 AbstractCegarLoop]: Abstraction has 10061 states and 13336 transitions. [2020-10-14 09:11:29,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 09:11:29,026 INFO L276 IsEmpty]: Start isEmpty. Operand 10061 states and 13336 transitions. [2020-10-14 09:11:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 09:11:29,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:29,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:29,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 09:11:29,032 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1728483555, now seen corresponding path program 1 times [2020-10-14 09:11:29,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:29,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137010505] [2020-10-14 09:11:29,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:29,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:30,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:34,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 09:11:34,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-14 09:11:34,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:11:34,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:34,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 09:11:34,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 09:11:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:34,210 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:34,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:34,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:34,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:34,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:34,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 09:11:34,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137010505] [2020-10-14 09:11:34,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:34,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:34,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886410616] [2020-10-14 09:11:34,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:34,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:34,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:34,310 INFO L87 Difference]: Start difference. First operand 10061 states and 13336 transitions. Second operand 4 states. [2020-10-14 09:11:36,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:36,630 INFO L93 Difference]: Finished difference Result 12955 states and 17096 transitions. [2020-10-14 09:11:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:11:36,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-14 09:11:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:36,641 INFO L225 Difference]: With dead ends: 12955 [2020-10-14 09:11:36,641 INFO L226 Difference]: Without dead ends: 10012 [2020-10-14 09:11:36,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2020-10-14 09:11:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9931. [2020-10-14 09:11:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9931 states. [2020-10-14 09:11:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9931 states to 9931 states and 12999 transitions. [2020-10-14 09:11:37,191 INFO L78 Accepts]: Start accepts. Automaton has 9931 states and 12999 transitions. Word has length 178 [2020-10-14 09:11:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:37,191 INFO L479 AbstractCegarLoop]: Abstraction has 9931 states and 12999 transitions. [2020-10-14 09:11:37,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9931 states and 12999 transitions. [2020-10-14 09:11:37,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 09:11:37,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:37,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:37,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 09:11:37,198 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:37,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 404715061, now seen corresponding path program 1 times [2020-10-14 09:11:37,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:37,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346779006] [2020-10-14 09:11:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 09:11:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 09:11:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:11:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:42,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 09:11:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 09:11:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:42,370 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:42,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:42,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:42,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:42,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 09:11:42,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346779006] [2020-10-14 09:11:42,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:42,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:42,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453235708] [2020-10-14 09:11:42,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:42,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:42,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:42,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:42,400 INFO L87 Difference]: Start difference. First operand 9931 states and 12999 transitions. Second operand 4 states. [2020-10-14 09:11:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:45,025 INFO L93 Difference]: Finished difference Result 26769 states and 34919 transitions. [2020-10-14 09:11:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:11:45,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-14 09:11:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:45,044 INFO L225 Difference]: With dead ends: 26769 [2020-10-14 09:11:45,045 INFO L226 Difference]: Without dead ends: 19625 [2020-10-14 09:11:45,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19625 states. [2020-10-14 09:11:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19625 to 19297. [2020-10-14 09:11:46,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19297 states. [2020-10-14 09:11:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19297 states to 19297 states and 25064 transitions. [2020-10-14 09:11:46,132 INFO L78 Accepts]: Start accepts. Automaton has 19297 states and 25064 transitions. Word has length 178 [2020-10-14 09:11:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:46,132 INFO L479 AbstractCegarLoop]: Abstraction has 19297 states and 25064 transitions. [2020-10-14 09:11:46,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:46,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19297 states and 25064 transitions. [2020-10-14 09:11:46,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-14 09:11:46,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:46,144 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:46,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 09:11:46,145 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:46,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:46,145 INFO L82 PathProgramCache]: Analyzing trace with hash -502961286, now seen corresponding path program 1 times [2020-10-14 09:11:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:46,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564516991] [2020-10-14 09:11:46,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:48,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:11:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:11:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 09:11:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:51,339 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:11:51,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:51,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:51,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 09:11:51,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564516991] [2020-10-14 09:11:51,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:11:51,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:11:51,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403840820] [2020-10-14 09:11:51,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:11:51,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:51,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:11:51,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:51,473 INFO L87 Difference]: Start difference. First operand 19297 states and 25064 transitions. Second operand 4 states. [2020-10-14 09:11:54,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:54,090 INFO L93 Difference]: Finished difference Result 25615 states and 33144 transitions. [2020-10-14 09:11:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:11:54,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-14 09:11:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:54,109 INFO L225 Difference]: With dead ends: 25615 [2020-10-14 09:11:54,110 INFO L226 Difference]: Without dead ends: 19095 [2020-10-14 09:11:54,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:11:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19095 states. [2020-10-14 09:11:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19095 to 19068. [2020-10-14 09:11:55,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19068 states. [2020-10-14 09:11:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19068 states to 19068 states and 24486 transitions. [2020-10-14 09:11:55,210 INFO L78 Accepts]: Start accepts. Automaton has 19068 states and 24486 transitions. Word has length 178 [2020-10-14 09:11:55,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:11:55,211 INFO L479 AbstractCegarLoop]: Abstraction has 19068 states and 24486 transitions. [2020-10-14 09:11:55,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:11:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 19068 states and 24486 transitions. [2020-10-14 09:11:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-14 09:11:55,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:11:55,225 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:11:55,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 09:11:55,225 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:11:55,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:11:55,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1642861498, now seen corresponding path program 1 times [2020-10-14 09:11:55,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:11:55,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488284958] [2020-10-14 09:11:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:11:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:55,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:56,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 09:11:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:11:56,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 09:11:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:56,373 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 09:11:56,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:11:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:11:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:11:56,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:11:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:11:56,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:11:56,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 09:11:56,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488284958] [2020-10-14 09:11:56,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 09:11:56,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 09:11:56,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291481786] [2020-10-14 09:11:56,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 09:11:56,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:11:56,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 09:11:56,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 09:11:56,443 INFO L87 Difference]: Start difference. First operand 19068 states and 24486 transitions. Second operand 7 states. [2020-10-14 09:11:56,610 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 09:11:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:11:59,346 INFO L93 Difference]: Finished difference Result 34548 states and 44396 transitions. [2020-10-14 09:11:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 09:11:59,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2020-10-14 09:11:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:11:59,372 INFO L225 Difference]: With dead ends: 34548 [2020-10-14 09:11:59,373 INFO L226 Difference]: Without dead ends: 24844 [2020-10-14 09:11:59,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 09:11:59,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2020-10-14 09:12:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 22708. [2020-10-14 09:12:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22708 states. [2020-10-14 09:12:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22708 states to 22708 states and 29149 transitions. [2020-10-14 09:12:00,931 INFO L78 Accepts]: Start accepts. Automaton has 22708 states and 29149 transitions. Word has length 180 [2020-10-14 09:12:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:12:00,932 INFO L479 AbstractCegarLoop]: Abstraction has 22708 states and 29149 transitions. [2020-10-14 09:12:00,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 09:12:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22708 states and 29149 transitions. [2020-10-14 09:12:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-14 09:12:00,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:12:00,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:12:00,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 09:12:00,944 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:12:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:12:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash 478469234, now seen corresponding path program 1 times [2020-10-14 09:12:00,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:12:00,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509318090] [2020-10-14 09:12:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:12:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:12:00,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:00,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:12:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking...