/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:10:21,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:10:21,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:10:21,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:10:21,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:10:21,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:10:21,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:10:21,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:10:21,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:10:21,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:10:21,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:10:21,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:10:21,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:10:21,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:10:21,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:10:21,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:10:21,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:10:21,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:10:21,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:10:21,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:10:21,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:10:21,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:10:21,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:10:21,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:10:21,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:10:21,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:10:21,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:10:21,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:10:21,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:10:21,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:10:21,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:10:21,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:10:21,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:10:21,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:10:21,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:10:21,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:10:21,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:10:21,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:10:21,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:10:21,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:10:21,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:10:21,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:10:21,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:10:21,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:10:21,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:10:21,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:10:21,865 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:10:21,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:10:21,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:10:21,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:10:21,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:10:21,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:10:21,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:10:21,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:10:21,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:10:21,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:10:21,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:10:21,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:10:21,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:10:21,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:10:21,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:10:21,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:10:21,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:10:21,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:10:21,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:10:21,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:10:21,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:10:22,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:10:22,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:10:22,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:10:22,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:10:22,207 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:10:22,207 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:10:22,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ba7315c/115fbdf16356493eb1f537f36626fb0b/FLAG7e23695e5 [2020-10-15 04:10:22,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:10:22,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:10:22,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ba7315c/115fbdf16356493eb1f537f36626fb0b/FLAG7e23695e5 [2020-10-15 04:10:23,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88ba7315c/115fbdf16356493eb1f537f36626fb0b [2020-10-15 04:10:23,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:10:23,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:10:23,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:10:23,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:10:23,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:10:23,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:10:23" (1/1) ... [2020-10-15 04:10:23,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d7d7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:23, skipping insertion in model container [2020-10-15 04:10:23,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:10:23" (1/1) ... [2020-10-15 04:10:23,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:10:23,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:10:24,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:10:24,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:10:24,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:10:24,968 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:10:24,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24 WrapperNode [2020-10-15 04:10:24,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:10:24,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:10:24,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:10:24,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:10:24,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:24,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... [2020-10-15 04:10:25,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:10:25,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:10:25,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:10:25,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:10:25,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:10:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:10:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:10:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:10:25,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:10:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:10:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:10:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 04:10:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:10:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:10:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:10:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:10:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:10:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:10:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:10:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:10:25,275 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:10:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:10:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:10:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:10:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:10:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:10:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:10:28,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:10:28,015 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:10:28,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:10:28 BoogieIcfgContainer [2020-10-15 04:10:28,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:10:28,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:10:28,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:10:28,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:10:28,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:10:23" (1/3) ... [2020-10-15 04:10:28,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2085002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:10:28, skipping insertion in model container [2020-10-15 04:10:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:10:24" (2/3) ... [2020-10-15 04:10:28,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2085002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:10:28, skipping insertion in model container [2020-10-15 04:10:28,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:10:28" (3/3) ... [2020-10-15 04:10:28,045 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 04:10:28,056 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:10:28,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:10:28,083 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:10:28,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:10:28,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:10:28,118 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:10:28,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:10:28,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:10:28,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:10:28,119 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:10:28,119 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:10:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states. [2020-10-15 04:10:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:10:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:28,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:10:28,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:28,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:28,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1078138388, now seen corresponding path program 1 times [2020-10-15 04:10:28,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:28,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780092965] [2020-10-15 04:10:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:31,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:31,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:32,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:32,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:32,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:34,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:34,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:10:34,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:10:34,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-15 04:10:34,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:34,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-15 04:10:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-15 04:10:34,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:10:35,054 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:10:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:35,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 04:10:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:35,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:35,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:35,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:35,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780092965] [2020-10-15 04:10:35,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:35,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:35,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991327114] [2020-10-15 04:10:35,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:35,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:35,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:35,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:35,326 INFO L87 Difference]: Start difference. First operand 808 states. Second operand 4 states. [2020-10-15 04:10:35,890 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:10:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:41,128 INFO L93 Difference]: Finished difference Result 1527 states and 2683 transitions. [2020-10-15 04:10:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:41,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-15 04:10:41,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:41,158 INFO L225 Difference]: With dead ends: 1527 [2020-10-15 04:10:41,159 INFO L226 Difference]: Without dead ends: 1311 [2020-10-15 04:10:41,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2020-10-15 04:10:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1309. [2020-10-15 04:10:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-15 04:10:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 2040 transitions. [2020-10-15 04:10:41,321 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 2040 transitions. Word has length 330 [2020-10-15 04:10:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:41,322 INFO L479 AbstractCegarLoop]: Abstraction has 1309 states and 2040 transitions. [2020-10-15 04:10:41,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 2040 transitions. [2020-10-15 04:10:41,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:10:41,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:41,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:10:41,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:10:41,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:41,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1867298226, now seen corresponding path program 1 times [2020-10-15 04:10:41,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:41,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573617269] [2020-10-15 04:10:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:42,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:43,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:46,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:46,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:10:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:10:46,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 04:10:46,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:46,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-15 04:10:46,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 225 [2020-10-15 04:10:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:47,489 WARN L193 SmtUtils]: Spent 672.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:10:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:47,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:47,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:10:47,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:47,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:47,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573617269] [2020-10-15 04:10:47,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:47,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:47,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131357798] [2020-10-15 04:10:47,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:47,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:47,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:47,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:47,907 INFO L87 Difference]: Start difference. First operand 1309 states and 2040 transitions. Second operand 4 states. [2020-10-15 04:10:48,417 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:10:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:10:52,956 INFO L93 Difference]: Finished difference Result 2683 states and 4213 transitions. [2020-10-15 04:10:52,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:10:52,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-15 04:10:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:10:52,976 INFO L225 Difference]: With dead ends: 2683 [2020-10-15 04:10:52,977 INFO L226 Difference]: Without dead ends: 2301 [2020-10-15 04:10:52,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:10:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2020-10-15 04:10:53,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2299. [2020-10-15 04:10:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2299 states. [2020-10-15 04:10:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3576 transitions. [2020-10-15 04:10:53,112 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3576 transitions. Word has length 330 [2020-10-15 04:10:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:10:53,115 INFO L479 AbstractCegarLoop]: Abstraction has 2299 states and 3576 transitions. [2020-10-15 04:10:53,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:10:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3576 transitions. [2020-10-15 04:10:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:10:53,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:10:53,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:10:53,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:10:53,132 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:10:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:10:53,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1297523319, now seen corresponding path program 1 times [2020-10-15 04:10:53,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:10:53,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307804832] [2020-10-15 04:10:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:10:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:54,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:55,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:58,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:58,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:10:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 04:10:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 04:10:58,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:58,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:58,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:10:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-15 04:10:58,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-10-15 04:10:58,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 04:10:59,234 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:10:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:10:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:10:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:10:59,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:10:59,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:10:59,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:10:59,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:10:59,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:10:59,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:10:59,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:10:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:10:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:10:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:10:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:10:59,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307804832] [2020-10-15 04:10:59,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:10:59,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:10:59,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629756665] [2020-10-15 04:10:59,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:10:59,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:10:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:10:59,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:10:59,649 INFO L87 Difference]: Start difference. First operand 2299 states and 3576 transitions. Second operand 4 states. [2020-10-15 04:11:00,495 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 278 [2020-10-15 04:11:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:04,822 INFO L93 Difference]: Finished difference Result 4867 states and 7634 transitions. [2020-10-15 04:11:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:04,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-10-15 04:11:04,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:04,843 INFO L225 Difference]: With dead ends: 4867 [2020-10-15 04:11:04,843 INFO L226 Difference]: Without dead ends: 4201 [2020-10-15 04:11:04,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4201 states. [2020-10-15 04:11:04,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4201 to 4199. [2020-10-15 04:11:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4199 states. [2020-10-15 04:11:04,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4199 states to 4199 states and 6516 transitions. [2020-10-15 04:11:04,984 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 6516 transitions. Word has length 330 [2020-10-15 04:11:04,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:04,984 INFO L479 AbstractCegarLoop]: Abstraction has 4199 states and 6516 transitions. [2020-10-15 04:11:04,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 6516 transitions. [2020-10-15 04:11:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 04:11:04,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:04,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:04,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:11:04,998 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1852614154, now seen corresponding path program 1 times [2020-10-15 04:11:04,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:05,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557443511] [2020-10-15 04:11:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:05,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:07,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:10,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:10,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 04:11:10,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:11:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-15 04:11:10,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:10,984 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:11:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:11,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:11,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:11,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:11,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:11:11,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:11,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:11,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:11,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557443511] [2020-10-15 04:11:11,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:11,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:11,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182988033] [2020-10-15 04:11:11,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:11,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:11,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:11,342 INFO L87 Difference]: Start difference. First operand 4199 states and 6516 transitions. Second operand 5 states. [2020-10-15 04:11:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:19,198 INFO L93 Difference]: Finished difference Result 12403 states and 19223 transitions. [2020-10-15 04:11:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:19,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-15 04:11:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:19,237 INFO L225 Difference]: With dead ends: 12403 [2020-10-15 04:11:19,237 INFO L226 Difference]: Without dead ends: 8221 [2020-10-15 04:11:19,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2020-10-15 04:11:19,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8219. [2020-10-15 04:11:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8219 states. [2020-10-15 04:11:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 12674 transitions. [2020-10-15 04:11:19,564 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 12674 transitions. Word has length 330 [2020-10-15 04:11:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:19,564 INFO L479 AbstractCegarLoop]: Abstraction has 8219 states and 12674 transitions. [2020-10-15 04:11:19,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 12674 transitions. [2020-10-15 04:11:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-15 04:11:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:19,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:19,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:11:19,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:19,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1183850265, now seen corresponding path program 1 times [2020-10-15 04:11:19,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:19,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884720990] [2020-10-15 04:11:19,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:19,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:24,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:24,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-15 04:11:24,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:11:24,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 04:11:24,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:24,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:24,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-15 04:11:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:25,274 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:11:25,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:25,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:25,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:25,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:25,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 04:11:25,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:25,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:25,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:25,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:25,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:11:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:25,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884720990] [2020-10-15 04:11:25,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:25,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:25,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19160023] [2020-10-15 04:11:25,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:25,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:25,463 INFO L87 Difference]: Start difference. First operand 8219 states and 12674 transitions. Second operand 5 states. [2020-10-15 04:11:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:32,741 INFO L93 Difference]: Finished difference Result 24310 states and 37444 transitions. [2020-10-15 04:11:32,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:11:32,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-15 04:11:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:32,800 INFO L225 Difference]: With dead ends: 24310 [2020-10-15 04:11:32,800 INFO L226 Difference]: Without dead ends: 16111 [2020-10-15 04:11:32,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:11:32,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16111 states. [2020-10-15 04:11:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16111 to 16109. [2020-10-15 04:11:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16109 states. [2020-10-15 04:11:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16109 states to 16109 states and 24688 transitions. [2020-10-15 04:11:34,003 INFO L78 Accepts]: Start accepts. Automaton has 16109 states and 24688 transitions. Word has length 332 [2020-10-15 04:11:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:34,004 INFO L479 AbstractCegarLoop]: Abstraction has 16109 states and 24688 transitions. [2020-10-15 04:11:34,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:11:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16109 states and 24688 transitions. [2020-10-15 04:11:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-15 04:11:34,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:34,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:34,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:11:34,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:34,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:34,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1143264079, now seen corresponding path program 1 times [2020-10-15 04:11:34,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:34,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145517680] [2020-10-15 04:11:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:34,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:35,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:39,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-15 04:11:39,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:11:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 04:11:39,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:39,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:11:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 04:11:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-15 04:11:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:39,763 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:11:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:39,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:39,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 04:11:39,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:39,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:39,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145517680] [2020-10-15 04:11:39,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:39,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:11:39,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100763234] [2020-10-15 04:11:39,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:11:39,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:39,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:11:39,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:39,923 INFO L87 Difference]: Start difference. First operand 16109 states and 24688 transitions. Second operand 4 states. [2020-10-15 04:11:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:11:48,588 INFO L93 Difference]: Finished difference Result 47456 states and 72592 transitions. [2020-10-15 04:11:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:11:48,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-10-15 04:11:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:11:48,657 INFO L225 Difference]: With dead ends: 47456 [2020-10-15 04:11:48,657 INFO L226 Difference]: Without dead ends: 31582 [2020-10-15 04:11:48,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:11:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31582 states. [2020-10-15 04:11:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31582 to 31580. [2020-10-15 04:11:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31580 states. [2020-10-15 04:11:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31580 states to 31580 states and 48094 transitions. [2020-10-15 04:11:49,710 INFO L78 Accepts]: Start accepts. Automaton has 31580 states and 48094 transitions. Word has length 334 [2020-10-15 04:11:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:11:49,710 INFO L479 AbstractCegarLoop]: Abstraction has 31580 states and 48094 transitions. [2020-10-15 04:11:49,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:11:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 31580 states and 48094 transitions. [2020-10-15 04:11:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-15 04:11:49,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:11:49,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:11:49,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:11:49,767 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:11:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:11:49,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1733151188, now seen corresponding path program 1 times [2020-10-15 04:11:49,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:11:49,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034462737] [2020-10-15 04:11:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:11:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:49,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:50,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:51,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:54,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:11:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:11:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 04:11:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:55,431 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:11:55,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:11:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:11:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:11:55,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:11:55,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:11:55,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:11:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:11:55,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034462737] [2020-10-15 04:11:55,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:11:55,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:11:55,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270622557] [2020-10-15 04:11:55,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:11:55,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:11:55,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:11:55,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:11:55,586 INFO L87 Difference]: Start difference. First operand 31580 states and 48094 transitions. Second operand 5 states. [2020-10-15 04:12:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:03,553 INFO L93 Difference]: Finished difference Result 93240 states and 141764 transitions. [2020-10-15 04:12:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:03,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-15 04:12:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:03,680 INFO L225 Difference]: With dead ends: 93240 [2020-10-15 04:12:03,681 INFO L226 Difference]: Without dead ends: 61806 [2020-10-15 04:12:03,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61806 states. [2020-10-15 04:12:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61806 to 61804. [2020-10-15 04:12:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61804 states. [2020-10-15 04:12:06,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61804 states to 61804 states and 93470 transitions. [2020-10-15 04:12:06,934 INFO L78 Accepts]: Start accepts. Automaton has 61804 states and 93470 transitions. Word has length 334 [2020-10-15 04:12:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:06,934 INFO L479 AbstractCegarLoop]: Abstraction has 61804 states and 93470 transitions. [2020-10-15 04:12:06,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:06,934 INFO L276 IsEmpty]: Start isEmpty. Operand 61804 states and 93470 transitions. [2020-10-15 04:12:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-15 04:12:07,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:07,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:07,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:12:07,037 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:07,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:07,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1811446546, now seen corresponding path program 1 times [2020-10-15 04:12:07,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:07,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935348613] [2020-10-15 04:12:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:08,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:12,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-15 04:12:12,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:12,774 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:12:12,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:12,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:12,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:12,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:12,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:12,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:12,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:12,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935348613] [2020-10-15 04:12:12,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:12,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:12,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015638986] [2020-10-15 04:12:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:12,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:12,974 INFO L87 Difference]: Start difference. First operand 61804 states and 93470 transitions. Second operand 5 states. [2020-10-15 04:12:22,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:22,882 INFO L93 Difference]: Finished difference Result 124300 states and 187836 transitions. [2020-10-15 04:12:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:12:22,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-15 04:12:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:22,976 INFO L225 Difference]: With dead ends: 124300 [2020-10-15 04:12:22,976 INFO L226 Difference]: Without dead ends: 63354 [2020-10-15 04:12:23,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:12:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63354 states. [2020-10-15 04:12:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63354 to 61788. [2020-10-15 04:12:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61788 states. [2020-10-15 04:12:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61788 states to 61788 states and 93442 transitions. [2020-10-15 04:12:25,407 INFO L78 Accepts]: Start accepts. Automaton has 61788 states and 93442 transitions. Word has length 336 [2020-10-15 04:12:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:25,408 INFO L479 AbstractCegarLoop]: Abstraction has 61788 states and 93442 transitions. [2020-10-15 04:12:25,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:12:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 61788 states and 93442 transitions. [2020-10-15 04:12:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-15 04:12:25,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:25,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:25,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:12:25,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 267156993, now seen corresponding path program 1 times [2020-10-15 04:12:25,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:25,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683309398] [2020-10-15 04:12:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:25,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:25,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:26,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:30,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:12:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-15 04:12:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-15 04:12:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:31,383 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:12:31,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:31,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:31,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:31,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:31,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:31,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683309398] [2020-10-15 04:12:31,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:31,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:12:31,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132173314] [2020-10-15 04:12:31,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:12:31,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:12:31,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:12:31,531 INFO L87 Difference]: Start difference. First operand 61788 states and 93442 transitions. Second operand 4 states. [2020-10-15 04:12:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:12:44,247 INFO L93 Difference]: Finished difference Result 182152 states and 274932 transitions. [2020-10-15 04:12:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 04:12:44,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2020-10-15 04:12:44,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:12:44,418 INFO L225 Difference]: With dead ends: 182152 [2020-10-15 04:12:44,418 INFO L226 Difference]: Without dead ends: 121014 [2020-10-15 04:12:44,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:12:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121014 states. [2020-10-15 04:12:50,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121014 to 121012. [2020-10-15 04:12:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121012 states. [2020-10-15 04:12:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121012 states to 121012 states and 181754 transitions. [2020-10-15 04:12:50,940 INFO L78 Accepts]: Start accepts. Automaton has 121012 states and 181754 transitions. Word has length 338 [2020-10-15 04:12:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:12:50,940 INFO L479 AbstractCegarLoop]: Abstraction has 121012 states and 181754 transitions. [2020-10-15 04:12:50,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:12:50,940 INFO L276 IsEmpty]: Start isEmpty. Operand 121012 states and 181754 transitions. [2020-10-15 04:12:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-15 04:12:51,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:12:51,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:12:51,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:12:51,023 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:12:51,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:12:51,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1466041274, now seen corresponding path program 1 times [2020-10-15 04:12:51,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:12:51,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143429195] [2020-10-15 04:12:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:12:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:56,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:12:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:12:56,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-15 04:12:56,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:56,823 WARN L193 SmtUtils]: Spent 558.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:12:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:12:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:12:56,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:12:56,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:12:56,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:12:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:12:56,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:12:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:12:56,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143429195] [2020-10-15 04:12:56,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:12:56,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:12:56,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602676968] [2020-10-15 04:12:56,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:12:56,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:12:56,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:12:56,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:12:56,969 INFO L87 Difference]: Start difference. First operand 121012 states and 181754 transitions. Second operand 5 states. [2020-10-15 04:13:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:16,188 INFO L93 Difference]: Finished difference Result 343442 states and 514539 transitions. [2020-10-15 04:13:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:16,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 338 [2020-10-15 04:13:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:16,520 INFO L225 Difference]: With dead ends: 343442 [2020-10-15 04:13:16,520 INFO L226 Difference]: Without dead ends: 223696 [2020-10-15 04:13:16,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223696 states. [2020-10-15 04:13:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223696 to 223694. [2020-10-15 04:13:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223694 states. [2020-10-15 04:13:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223694 states to 223694 states and 333225 transitions. [2020-10-15 04:13:33,707 INFO L78 Accepts]: Start accepts. Automaton has 223694 states and 333225 transitions. Word has length 338 [2020-10-15 04:13:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:33,708 INFO L479 AbstractCegarLoop]: Abstraction has 223694 states and 333225 transitions. [2020-10-15 04:13:33,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 223694 states and 333225 transitions. [2020-10-15 04:13:33,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-15 04:13:33,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:33,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:13:33,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 04:13:33,842 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:33,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1891167312, now seen corresponding path program 1 times [2020-10-15 04:13:33,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:33,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279882007] [2020-10-15 04:13:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:33,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:35,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:35,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-15 04:13:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:39,524 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification that was a NOOP. DAG size: 277 [2020-10-15 04:13:39,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:39,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:39,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:13:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:39,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279882007] [2020-10-15 04:13:39,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:39,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:39,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430425131] [2020-10-15 04:13:39,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:39,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:39,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:39,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:39,659 INFO L87 Difference]: Start difference. First operand 223694 states and 333225 transitions. Second operand 5 states.