/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:49:28,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:49:28,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:49:28,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:49:28,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:49:28,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:49:28,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:49:28,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:49:28,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:49:28,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:49:28,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:49:28,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:49:28,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:49:28,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:49:28,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:49:28,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:49:28,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:49:28,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:49:28,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:49:28,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:49:28,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:49:28,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:49:28,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:49:28,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:49:28,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:49:28,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:49:28,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:49:28,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:49:28,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:49:28,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:49:28,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:49:28,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:49:28,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:49:28,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:49:28,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:49:28,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:49:28,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:49:28,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:49:28,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:49:28,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:49:28,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:49:28,760 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:49:28,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:49:28,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:49:28,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:49:28,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:49:28,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:49:28,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:49:28,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:49:28,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:49:28,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:49:28,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:49:28,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:49:28,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:49:28,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:49:28,807 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:49:28,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:49:28,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:49:28,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:49:28,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:49:28,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:49:28,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:49:28,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:49:28,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:49:28,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:49:28,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:49:28,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:49:28,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:49:28,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:49:28,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:49:28,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:49:28,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:49:29,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:49:29,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:49:29,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:49:29,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:49:29,135 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:49:29,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 03:49:29,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ab98a53/7630250eb7be4edba13bc3058add9b0f/FLAG8d031c1e7 [2020-10-15 03:49:29,952 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:49:29,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 03:49:29,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ab98a53/7630250eb7be4edba13bc3058add9b0f/FLAG8d031c1e7 [2020-10-15 03:49:30,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ab98a53/7630250eb7be4edba13bc3058add9b0f [2020-10-15 03:49:30,037 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:49:30,039 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:49:30,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:49:30,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:49:30,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:49:30,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:49:30" (1/1) ... [2020-10-15 03:49:30,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675ad57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:30, skipping insertion in model container [2020-10-15 03:49:30,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:49:30" (1/1) ... [2020-10-15 03:49:30,055 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:49:30,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:49:31,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:49:31,524 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:49:32,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:49:32,097 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:49:32,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32 WrapperNode [2020-10-15 03:49:32,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:49:32,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:49:32,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:49:32,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:49:32,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... [2020-10-15 03:49:32,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:49:32,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:49:32,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:49:32,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:49:32,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:49:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:49:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:49:32,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:49:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:49:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:49:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:49:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:49:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:49:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:49:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:49:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:49:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:49:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:49:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:49:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:49:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:49:32,431 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:49:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:49:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:49:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:49:32,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:49:35,940 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:49:35,940 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:49:35,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:35 BoogieIcfgContainer [2020-10-15 03:49:35,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:49:35,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:49:35,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:49:35,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:49:35,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:49:30" (1/3) ... [2020-10-15 03:49:35,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132072fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:35, skipping insertion in model container [2020-10-15 03:49:35,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:49:32" (2/3) ... [2020-10-15 03:49:35,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132072fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:49:35, skipping insertion in model container [2020-10-15 03:49:35,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:49:35" (3/3) ... [2020-10-15 03:49:35,961 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-15 03:49:35,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:49:35,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-15 03:49:35,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 03:49:36,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:49:36,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:49:36,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:49:36,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:49:36,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:49:36,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:49:36,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:49:36,025 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:49:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states. [2020-10-15 03:49:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:49:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:49:36,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:49:36,084 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:49:36,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:49:36,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1316397812, now seen corresponding path program 1 times [2020-10-15 03:49:36,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:49:36,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704344577] [2020-10-15 03:49:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:49:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:36,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:37,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:37,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:38,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:39,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:41,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:41,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:49:41,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:49:41,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 03:49:41,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:41,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:49:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-15 03:49:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-15 03:49:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:49:43,613 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:49:43,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:49:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:49:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:49:43,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:49:43,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:49:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:49:43,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 03:49:43,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:49:43,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:49:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:49:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:49:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:49:43,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:49:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:49:43,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704344577] [2020-10-15 03:49:43,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:49:43,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:49:43,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805604929] [2020-10-15 03:49:43,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:49:43,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:49:43,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:49:43,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:49:43,803 INFO L87 Difference]: Start difference. First operand 1111 states. Second operand 6 states. [2020-10-15 03:49:45,694 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification that was a NOOP. DAG size: 617 [2020-10-15 03:50:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:01,545 INFO L93 Difference]: Finished difference Result 2989 states and 5300 transitions. [2020-10-15 03:50:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:50:01,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:50:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:01,618 INFO L225 Difference]: With dead ends: 2989 [2020-10-15 03:50:01,619 INFO L226 Difference]: Without dead ends: 2164 [2020-10-15 03:50:01,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:50:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2020-10-15 03:50:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1573. [2020-10-15 03:50:01,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-10-15 03:50:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2127 transitions. [2020-10-15 03:50:01,843 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2127 transitions. Word has length 68 [2020-10-15 03:50:01,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:01,845 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 2127 transitions. [2020-10-15 03:50:01,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:50:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2127 transitions. [2020-10-15 03:50:01,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:50:01,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:01,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:01,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:50:01,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash 361577628, now seen corresponding path program 1 times [2020-10-15 03:50:01,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:01,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235232676] [2020-10-15 03:50:01,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:03,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:07,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:50:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:50:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-15 03:50:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:07,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:50:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 03:50:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:08,741 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:50:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:08,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:08,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:08,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:08,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 03:50:08,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:08,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:08,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235232676] [2020-10-15 03:50:08,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:08,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:50:08,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375876676] [2020-10-15 03:50:08,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:50:08,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:50:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:50:08,885 INFO L87 Difference]: Start difference. First operand 1573 states and 2127 transitions. Second operand 6 states. [2020-10-15 03:50:10,595 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-15 03:50:18,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:18,498 INFO L93 Difference]: Finished difference Result 2848 states and 3940 transitions. [2020-10-15 03:50:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:50:18,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-15 03:50:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:18,510 INFO L225 Difference]: With dead ends: 2848 [2020-10-15 03:50:18,510 INFO L226 Difference]: Without dead ends: 1881 [2020-10-15 03:50:18,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:18,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-10-15 03:50:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1873. [2020-10-15 03:50:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1873 states. [2020-10-15 03:50:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2529 transitions. [2020-10-15 03:50:18,581 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2529 transitions. Word has length 68 [2020-10-15 03:50:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:18,582 INFO L479 AbstractCegarLoop]: Abstraction has 1873 states and 2529 transitions. [2020-10-15 03:50:18,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:50:18,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2529 transitions. [2020-10-15 03:50:18,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:50:18,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:18,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:18,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:50:18,587 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:18,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1668976807, now seen corresponding path program 1 times [2020-10-15 03:50:18,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:18,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687975420] [2020-10-15 03:50:18,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:18,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:21,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:23,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:23,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:50:23,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:50:23,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-15 03:50:23,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:23,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:23,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:23,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 03:50:23,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:25,345 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:50:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:25,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:25,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:25,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:25,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-15 03:50:25,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:25,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:25,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:25,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:25,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687975420] [2020-10-15 03:50:25,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:25,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:25,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504359748] [2020-10-15 03:50:25,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:25,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:25,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:25,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:25,474 INFO L87 Difference]: Start difference. First operand 1873 states and 2529 transitions. Second operand 8 states. [2020-10-15 03:50:27,062 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 620 [2020-10-15 03:50:34,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:34,523 INFO L93 Difference]: Finished difference Result 6413 states and 9459 transitions. [2020-10-15 03:50:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:50:34,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-15 03:50:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:34,550 INFO L225 Difference]: With dead ends: 6413 [2020-10-15 03:50:34,550 INFO L226 Difference]: Without dead ends: 5411 [2020-10-15 03:50:34,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:50:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2020-10-15 03:50:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 1792. [2020-10-15 03:50:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1792 states. [2020-10-15 03:50:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2398 transitions. [2020-10-15 03:50:34,668 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2398 transitions. Word has length 68 [2020-10-15 03:50:34,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:34,669 INFO L479 AbstractCegarLoop]: Abstraction has 1792 states and 2398 transitions. [2020-10-15 03:50:34,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:50:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2398 transitions. [2020-10-15 03:50:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 03:50:34,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:34,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:34,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:50:34,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1261571036, now seen corresponding path program 1 times [2020-10-15 03:50:34,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:34,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50231121] [2020-10-15 03:50:34,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:37,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:39,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 03:50:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:50:39,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:50:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:39,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:50:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:50:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:50:41,491 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:50:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:41,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 03:50:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:41,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:41,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50231121] [2020-10-15 03:50:41,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:41,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:50:41,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305133137] [2020-10-15 03:50:41,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:50:41,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:50:41,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:50:41,589 INFO L87 Difference]: Start difference. First operand 1792 states and 2398 transitions. Second operand 9 states. [2020-10-15 03:50:43,220 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 621 [2020-10-15 03:50:50,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:50:50,936 INFO L93 Difference]: Finished difference Result 5634 states and 8190 transitions. [2020-10-15 03:50:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:50:50,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-15 03:50:50,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:50:50,960 INFO L225 Difference]: With dead ends: 5634 [2020-10-15 03:50:50,960 INFO L226 Difference]: Without dead ends: 4926 [2020-10-15 03:50:50,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-15 03:50:50,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2020-10-15 03:50:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 1869. [2020-10-15 03:50:51,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2020-10-15 03:50:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2490 transitions. [2020-10-15 03:50:51,084 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2490 transitions. Word has length 68 [2020-10-15 03:50:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:50:51,084 INFO L479 AbstractCegarLoop]: Abstraction has 1869 states and 2490 transitions. [2020-10-15 03:50:51,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:50:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2490 transitions. [2020-10-15 03:50:51,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:50:51,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:50:51,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:50:51,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:50:51,089 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:50:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:50:51,089 INFO L82 PathProgramCache]: Analyzing trace with hash -296896658, now seen corresponding path program 1 times [2020-10-15 03:50:51,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:50:51,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026420891] [2020-10-15 03:50:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:50:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:51,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:53,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:53,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:50:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:50:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 03:50:56,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:56,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:50:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:50:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-15 03:50:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:58,169 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:50:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:50:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:50:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:50:58,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:50:58,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:50:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:50:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:50:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:50:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:50:58,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026420891] [2020-10-15 03:50:58,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:50:58,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:50:58,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748929142] [2020-10-15 03:50:58,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:50:58,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:50:58,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:50:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:50:58,291 INFO L87 Difference]: Start difference. First operand 1869 states and 2490 transitions. Second operand 8 states. [2020-10-15 03:51:00,034 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 623 [2020-10-15 03:51:08,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:08,452 INFO L93 Difference]: Finished difference Result 6174 states and 8950 transitions. [2020-10-15 03:51:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:51:08,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-15 03:51:08,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:08,474 INFO L225 Difference]: With dead ends: 6174 [2020-10-15 03:51:08,474 INFO L226 Difference]: Without dead ends: 5447 [2020-10-15 03:51:08,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:51:08,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2020-10-15 03:51:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 1871. [2020-10-15 03:51:08,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-10-15 03:51:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2492 transitions. [2020-10-15 03:51:08,652 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2492 transitions. Word has length 69 [2020-10-15 03:51:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:08,653 INFO L479 AbstractCegarLoop]: Abstraction has 1871 states and 2492 transitions. [2020-10-15 03:51:08,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:51:08,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2492 transitions. [2020-10-15 03:51:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:51:08,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:08,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:08,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:51:08,657 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:08,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:08,658 INFO L82 PathProgramCache]: Analyzing trace with hash -134984262, now seen corresponding path program 1 times [2020-10-15 03:51:08,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:08,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801533470] [2020-10-15 03:51:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:08,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:08,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:11,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:13,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:13,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 03:51:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:15,505 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:51:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:15,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:15,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:15,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:15,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801533470] [2020-10-15 03:51:15,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:15,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:15,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400201242] [2020-10-15 03:51:15,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:15,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:15,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:15,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:15,625 INFO L87 Difference]: Start difference. First operand 1871 states and 2492 transitions. Second operand 8 states. [2020-10-15 03:51:17,268 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 623 [2020-10-15 03:51:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:25,617 INFO L93 Difference]: Finished difference Result 5140 states and 7311 transitions. [2020-10-15 03:51:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:51:25,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-15 03:51:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:25,633 INFO L225 Difference]: With dead ends: 5140 [2020-10-15 03:51:25,633 INFO L226 Difference]: Without dead ends: 4485 [2020-10-15 03:51:25,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:51:25,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2020-10-15 03:51:25,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 1917. [2020-10-15 03:51:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-15 03:51:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2546 transitions. [2020-10-15 03:51:25,791 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2546 transitions. Word has length 69 [2020-10-15 03:51:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:25,791 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2546 transitions. [2020-10-15 03:51:25,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:51:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2546 transitions. [2020-10-15 03:51:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 03:51:25,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:25,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:25,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:51:25,796 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash 136517199, now seen corresponding path program 1 times [2020-10-15 03:51:25,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:25,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152756295] [2020-10-15 03:51:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:25,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:25,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:25,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:26,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:28,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:30,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:51:30,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:32,564 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:51:32,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:32,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:32,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:51:32,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:32,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152756295] [2020-10-15 03:51:32,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:32,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:51:32,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650328832] [2020-10-15 03:51:32,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:51:32,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:32,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:51:32,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:51:32,654 INFO L87 Difference]: Start difference. First operand 1917 states and 2546 transitions. Second operand 8 states. [2020-10-15 03:51:34,287 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 623 [2020-10-15 03:51:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:41,859 INFO L93 Difference]: Finished difference Result 5137 states and 7191 transitions. [2020-10-15 03:51:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:51:41,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-10-15 03:51:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:41,876 INFO L225 Difference]: With dead ends: 5137 [2020-10-15 03:51:41,876 INFO L226 Difference]: Without dead ends: 4010 [2020-10-15 03:51:41,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:51:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4010 states. [2020-10-15 03:51:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4010 to 1933. [2020-10-15 03:51:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2020-10-15 03:51:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 2554 transitions. [2020-10-15 03:51:42,044 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 2554 transitions. Word has length 69 [2020-10-15 03:51:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:42,044 INFO L479 AbstractCegarLoop]: Abstraction has 1933 states and 2554 transitions. [2020-10-15 03:51:42,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:51:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 2554 transitions. [2020-10-15 03:51:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:51:42,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:42,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:42,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:51:42,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:42,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:42,051 INFO L82 PathProgramCache]: Analyzing trace with hash -220198464, now seen corresponding path program 1 times [2020-10-15 03:51:42,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:42,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159535473] [2020-10-15 03:51:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:42,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:43,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:45,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:45,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:47,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:47,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:51:47,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 03:51:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 03:51:47,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:47,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:51:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:51:47,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 03:51:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:48,870 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:51:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:51:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:51:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:51:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:51:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:51:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:51:48,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:51:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:51:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:51:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:51:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:51:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:51:48,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159535473] [2020-10-15 03:51:48,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:51:48,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:51:48,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329640072] [2020-10-15 03:51:48,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:51:48,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:51:48,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:51:48,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:51:48,925 INFO L87 Difference]: Start difference. First operand 1933 states and 2554 transitions. Second operand 9 states. [2020-10-15 03:51:50,582 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 624 [2020-10-15 03:51:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:51:59,060 INFO L93 Difference]: Finished difference Result 3909 states and 5451 transitions. [2020-10-15 03:51:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:51:59,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-15 03:51:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:51:59,068 INFO L225 Difference]: With dead ends: 3909 [2020-10-15 03:51:59,068 INFO L226 Difference]: Without dead ends: 3193 [2020-10-15 03:51:59,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:51:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2020-10-15 03:51:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1847. [2020-10-15 03:51:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1847 states. [2020-10-15 03:51:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2430 transitions. [2020-10-15 03:51:59,189 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2430 transitions. Word has length 70 [2020-10-15 03:51:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:51:59,189 INFO L479 AbstractCegarLoop]: Abstraction has 1847 states and 2430 transitions. [2020-10-15 03:51:59,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:51:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2430 transitions. [2020-10-15 03:51:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:51:59,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:51:59,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:51:59,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:51:59,193 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:51:59,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:51:59,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2144454785, now seen corresponding path program 1 times [2020-10-15 03:51:59,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:51:59,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301552903] [2020-10-15 03:51:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:51:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:51:59,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:51:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:00,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:00,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:01,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:04,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:52:04,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:52:04,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:05,909 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:52:05,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:05,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:05,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:05,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:05,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 03:52:05,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:05,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:52:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:05,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:52:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:05,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301552903] [2020-10-15 03:52:05,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:05,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 03:52:05,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751454308] [2020-10-15 03:52:05,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:05,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:05,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:05,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:05,994 INFO L87 Difference]: Start difference. First operand 1847 states and 2430 transitions. Second operand 8 states. [2020-10-15 03:52:07,602 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 623 [2020-10-15 03:52:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:15,295 INFO L93 Difference]: Finished difference Result 5073 states and 7057 transitions. [2020-10-15 03:52:15,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 03:52:15,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:52:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:15,304 INFO L225 Difference]: With dead ends: 5073 [2020-10-15 03:52:15,304 INFO L226 Difference]: Without dead ends: 4381 [2020-10-15 03:52:15,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:52:15,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2020-10-15 03:52:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 1930. [2020-10-15 03:52:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-15 03:52:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2538 transitions. [2020-10-15 03:52:15,499 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2538 transitions. Word has length 70 [2020-10-15 03:52:15,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:15,499 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2538 transitions. [2020-10-15 03:52:15,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2538 transitions. [2020-10-15 03:52:15,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 03:52:15,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:15,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:15,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:52:15,504 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash -764820663, now seen corresponding path program 1 times [2020-10-15 03:52:15,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:15,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350904249] [2020-10-15 03:52:15,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:17,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:20,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:20,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:52:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:52:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:22,243 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:52:22,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:22,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:22,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:22,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:52:22,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:22,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:22,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350904249] [2020-10-15 03:52:22,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:22,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:52:22,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329607446] [2020-10-15 03:52:22,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:22,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:22,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:22,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:22,293 INFO L87 Difference]: Start difference. First operand 1930 states and 2538 transitions. Second operand 8 states. [2020-10-15 03:52:23,940 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 622 [2020-10-15 03:52:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:32,961 INFO L93 Difference]: Finished difference Result 9325 states and 13270 transitions. [2020-10-15 03:52:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 03:52:32,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-15 03:52:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:32,980 INFO L225 Difference]: With dead ends: 9325 [2020-10-15 03:52:32,980 INFO L226 Difference]: Without dead ends: 8645 [2020-10-15 03:52:32,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-15 03:52:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8645 states. [2020-10-15 03:52:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8645 to 1952. [2020-10-15 03:52:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1952 states. [2020-10-15 03:52:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2568 transitions. [2020-10-15 03:52:33,220 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2568 transitions. Word has length 70 [2020-10-15 03:52:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:33,220 INFO L479 AbstractCegarLoop]: Abstraction has 1952 states and 2568 transitions. [2020-10-15 03:52:33,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2568 transitions. [2020-10-15 03:52:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:52:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:33,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:33,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:52:33,227 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:33,229 INFO L82 PathProgramCache]: Analyzing trace with hash 40570229, now seen corresponding path program 1 times [2020-10-15 03:52:33,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:33,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215679054] [2020-10-15 03:52:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:33,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:34,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:35,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:35,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:36,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:38,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:38,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:52:38,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 03:52:38,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:52:38,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:38,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:52:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:52:38,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:52:38,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:39,971 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:52:39,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:39,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:40,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:40,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:40,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215679054] [2020-10-15 03:52:40,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:40,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:52:40,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732856366] [2020-10-15 03:52:40,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:52:40,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:40,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:52:40,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:52:40,028 INFO L87 Difference]: Start difference. First operand 1952 states and 2568 transitions. Second operand 8 states. [2020-10-15 03:52:41,721 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 622 [2020-10-15 03:52:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:52:48,217 INFO L93 Difference]: Finished difference Result 6198 states and 8780 transitions. [2020-10-15 03:52:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:52:48,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-15 03:52:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:52:48,224 INFO L225 Difference]: With dead ends: 6198 [2020-10-15 03:52:48,225 INFO L226 Difference]: Without dead ends: 4816 [2020-10-15 03:52:48,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 03:52:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2020-10-15 03:52:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 2495. [2020-10-15 03:52:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2495 states. [2020-10-15 03:52:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 3447 transitions. [2020-10-15 03:52:48,551 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 3447 transitions. Word has length 71 [2020-10-15 03:52:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:52:48,551 INFO L479 AbstractCegarLoop]: Abstraction has 2495 states and 3447 transitions. [2020-10-15 03:52:48,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:52:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 3447 transitions. [2020-10-15 03:52:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-15 03:52:48,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:52:48,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:52:48,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:52:48,555 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:52:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:52:48,556 INFO L82 PathProgramCache]: Analyzing trace with hash -462490393, now seen corresponding path program 1 times [2020-10-15 03:52:48,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:52:48,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334266838] [2020-10-15 03:52:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:52:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:49,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:49,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:53,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:53,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 03:52:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:52:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:52:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:53,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:52:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:52:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 03:52:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:55,414 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:52:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:52:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:52:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:52:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:52:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:52:55,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:52:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:52:55,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:52:55,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334266838] [2020-10-15 03:52:55,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:52:55,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:52:55,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881857499] [2020-10-15 03:52:55,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:52:55,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:52:55,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:52:55,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:52:55,479 INFO L87 Difference]: Start difference. First operand 2495 states and 3447 transitions. Second operand 9 states. [2020-10-15 03:52:57,173 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 630 [2020-10-15 03:53:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:04,758 INFO L93 Difference]: Finished difference Result 14773 states and 21673 transitions. [2020-10-15 03:53:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 03:53:04,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-15 03:53:04,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:04,779 INFO L225 Difference]: With dead ends: 14773 [2020-10-15 03:53:04,779 INFO L226 Difference]: Without dead ends: 13159 [2020-10-15 03:53:04,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-15 03:53:04,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13159 states. [2020-10-15 03:53:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13159 to 2239. [2020-10-15 03:53:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2239 states. [2020-10-15 03:53:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 3110 transitions. [2020-10-15 03:53:05,146 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 3110 transitions. Word has length 71 [2020-10-15 03:53:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:05,146 INFO L479 AbstractCegarLoop]: Abstraction has 2239 states and 3110 transitions. [2020-10-15 03:53:05,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:53:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 3110 transitions. [2020-10-15 03:53:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-15 03:53:05,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:05,149 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] [2020-10-15 03:53:05,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:53:05,150 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:05,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:05,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1800138700, now seen corresponding path program 1 times [2020-10-15 03:53:05,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:05,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744986888] [2020-10-15 03:53:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:05,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:05,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:10,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:10,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 03:53:10,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 03:53:10,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 03:53:10,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:11,905 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 616 [2020-10-15 03:53:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:53:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:11,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:53:11,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:53:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:53:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:53:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:53:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:53:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:53:11,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744986888] [2020-10-15 03:53:11,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:53:11,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:53:11,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173976952] [2020-10-15 03:53:11,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:53:11,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:53:11,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:53:11,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:53:11,987 INFO L87 Difference]: Start difference. First operand 2239 states and 3110 transitions. Second operand 6 states. [2020-10-15 03:53:13,708 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 625 [2020-10-15 03:53:17,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:53:17,780 INFO L93 Difference]: Finished difference Result 5613 states and 8049 transitions. [2020-10-15 03:53:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:53:17,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-15 03:53:17,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:53:17,786 INFO L225 Difference]: With dead ends: 5613 [2020-10-15 03:53:17,787 INFO L226 Difference]: Without dead ends: 3593 [2020-10-15 03:53:17,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:53:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2020-10-15 03:53:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3591. [2020-10-15 03:53:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3591 states. [2020-10-15 03:53:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5149 transitions. [2020-10-15 03:53:18,397 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5149 transitions. Word has length 88 [2020-10-15 03:53:18,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:53:18,397 INFO L479 AbstractCegarLoop]: Abstraction has 3591 states and 5149 transitions. [2020-10-15 03:53:18,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:53:18,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5149 transitions. [2020-10-15 03:53:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-15 03:53:18,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:53:18,401 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] [2020-10-15 03:53:18,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:53:18,402 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:53:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:53:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1082732358, now seen corresponding path program 1 times [2020-10-15 03:53:18,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:53:18,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710836336] [2020-10-15 03:53:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:53:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:53:18,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:53:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking...