/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:55:38,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:55:38,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:55:38,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:55:38,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:55:38,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:55:38,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:55:38,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:55:38,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:55:38,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:55:38,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:55:38,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:55:38,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:55:38,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:55:38,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:55:38,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:55:38,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:55:38,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:55:38,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:55:38,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:55:38,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:55:38,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:55:38,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:55:38,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:55:38,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:55:38,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:55:38,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:55:38,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:55:38,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:55:38,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:55:38,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:55:38,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:55:38,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:55:38,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:55:38,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:55:38,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:55:38,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:55:38,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:55:38,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:55:38,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:55:38,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:55:38,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:55:38,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:55:38,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:55:38,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:55:38,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:55:38,609 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:55:38,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:55:38,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:55:38,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:55:38,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:55:38,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:55:38,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:55:38,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:55:38,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:55:38,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:55:38,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:55:38,613 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:55:38,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:55:38,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:55:38,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:55:38,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:55:38,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:55:38,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:55:38,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:55:38,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:55:38,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:55:38,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:55:38,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:55:38,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:55:38,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:55:38,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:55:38,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:55:38,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:55:38,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:55:38,996 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:55:38,997 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:55:38,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:55:39,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327a38b16/084733f2c0f94471bf030202edf49eb4/FLAG8eae4f13b [2020-10-14 08:55:39,669 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:55:39,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:55:39,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327a38b16/084733f2c0f94471bf030202edf49eb4/FLAG8eae4f13b [2020-10-14 08:55:39,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/327a38b16/084733f2c0f94471bf030202edf49eb4 [2020-10-14 08:55:39,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:55:39,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:55:39,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:55:39,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:55:39,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:55:39,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:39" (1/1) ... [2020-10-14 08:55:39,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13af5d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:39, skipping insertion in model container [2020-10-14 08:55:39,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:55:39" (1/1) ... [2020-10-14 08:55:39,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:55:39,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:55:40,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:55:40,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:55:40,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:55:40,599 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:55:40,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40 WrapperNode [2020-10-14 08:55:40,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:55:40,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:55:40,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:55:40,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:55:40,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... [2020-10-14 08:55:40,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:55:40,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:55:40,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:55:40,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:55:40,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:55:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:55:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:55:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:55:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:55:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:55:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:55:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:55:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:55:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:55:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:55:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:55:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:55:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:55:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:55:40,768 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:55:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:55:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:55:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:55:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:55:41,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:55:41,751 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:55:41,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:41 BoogieIcfgContainer [2020-10-14 08:55:41,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:55:41,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:55:41,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:55:41,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:55:41,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:55:39" (1/3) ... [2020-10-14 08:55:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ba828e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:41, skipping insertion in model container [2020-10-14 08:55:41,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:55:40" (2/3) ... [2020-10-14 08:55:41,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ba828e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:55:41, skipping insertion in model container [2020-10-14 08:55:41,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:55:41" (3/3) ... [2020-10-14 08:55:41,785 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:55:41,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:55:41,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:55:41,819 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:55:41,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:55:41,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:55:41,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:55:41,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:55:41,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:55:41,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:55:41,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:55:41,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:55:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-10-14 08:55:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 08:55:41,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:41,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:41,890 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1558980696, now seen corresponding path program 1 times [2020-10-14 08:55:41,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:41,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801380563] [2020-10-14 08:55:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:42,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:42,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:44,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:47,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 08:55:47,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 08:55:47,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:47,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:47,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 08:55:47,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:55:47,708 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:55:47,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:47,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:47,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 08:55:47,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:47,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:47,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:47,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801380563] [2020-10-14 08:55:47,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:47,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:47,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907947469] [2020-10-14 08:55:47,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:47,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:47,903 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 6 states. [2020-10-14 08:55:48,208 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:55:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:49,240 INFO L93 Difference]: Finished difference Result 382 states and 632 transitions. [2020-10-14 08:55:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:49,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2020-10-14 08:55:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:49,259 INFO L225 Difference]: With dead ends: 382 [2020-10-14 08:55:49,260 INFO L226 Difference]: Without dead ends: 254 [2020-10-14 08:55:49,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:55:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-14 08:55:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2020-10-14 08:55:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 08:55:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 361 transitions. [2020-10-14 08:55:49,353 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 361 transitions. Word has length 94 [2020-10-14 08:55:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:49,355 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 361 transitions. [2020-10-14 08:55:49,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 361 transitions. [2020-10-14 08:55:49,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:55:49,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:49,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:49,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:55:49,367 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:49,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1475711692, now seen corresponding path program 1 times [2020-10-14 08:55:49,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:49,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366033744] [2020-10-14 08:55:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:49,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:54,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:54,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:55:54,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:54,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:55:54,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:54,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:54,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 08:55:54,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:54,686 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:55:54,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:54,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:54,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:54,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:54,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 08:55:54,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:54,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:54,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:54,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:54,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:54,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366033744] [2020-10-14 08:55:54,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:54,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:54,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248936336] [2020-10-14 08:55:54,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:54,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:54,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:54,765 INFO L87 Difference]: Start difference. First operand 252 states and 361 transitions. Second operand 6 states. [2020-10-14 08:55:54,975 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:55:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:55,754 INFO L93 Difference]: Finished difference Result 573 states and 867 transitions. [2020-10-14 08:55:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:55,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 08:55:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:55,759 INFO L225 Difference]: With dead ends: 573 [2020-10-14 08:55:55,759 INFO L226 Difference]: Without dead ends: 391 [2020-10-14 08:55:55,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:55:55,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-14 08:55:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2020-10-14 08:55:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-10-14 08:55:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 577 transitions. [2020-10-14 08:55:55,814 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 577 transitions. Word has length 95 [2020-10-14 08:55:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:55,817 INFO L479 AbstractCegarLoop]: Abstraction has 389 states and 577 transitions. [2020-10-14 08:55:55,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 577 transitions. [2020-10-14 08:55:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:55:55,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:55,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:55,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:55:55,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:55,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash 182980041, now seen corresponding path program 1 times [2020-10-14 08:55:55,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:55,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494766764] [2020-10-14 08:55:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:57,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:56:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:00,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:00,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 08:56:00,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:01,110 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:01,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:01,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 08:56:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:01,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:01,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494766764] [2020-10-14 08:56:01,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:01,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:01,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529625424] [2020-10-14 08:56:01,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:01,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:01,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:01,185 INFO L87 Difference]: Start difference. First operand 389 states and 577 transitions. Second operand 6 states. [2020-10-14 08:56:01,377 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:56:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:02,172 INFO L93 Difference]: Finished difference Result 1005 states and 1545 transitions. [2020-10-14 08:56:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:02,173 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-14 08:56:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:02,185 INFO L225 Difference]: With dead ends: 1005 [2020-10-14 08:56:02,185 INFO L226 Difference]: Without dead ends: 678 [2020-10-14 08:56:02,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:56:02,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-14 08:56:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 676. [2020-10-14 08:56:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-10-14 08:56:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1028 transitions. [2020-10-14 08:56:02,267 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1028 transitions. Word has length 96 [2020-10-14 08:56:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:02,268 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 1028 transitions. [2020-10-14 08:56:02,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1028 transitions. [2020-10-14 08:56:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:56:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:02,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:02,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:56:02,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash 135578638, now seen corresponding path program 1 times [2020-10-14 08:56:02,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:02,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833672470] [2020-10-14 08:56:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:07,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:56:07,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:56:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:56:07,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:07,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:07,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 08:56:07,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:07,527 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:07,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:07,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:07,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:07,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:56:07,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:07,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833672470] [2020-10-14 08:56:07,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:07,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:07,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506444109] [2020-10-14 08:56:07,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:07,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:07,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:07,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:07,590 INFO L87 Difference]: Start difference. First operand 676 states and 1028 transitions. Second operand 6 states. [2020-10-14 08:56:07,778 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:56:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:08,601 INFO L93 Difference]: Finished difference Result 1871 states and 2904 transitions. [2020-10-14 08:56:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:08,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:56:08,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:08,616 INFO L225 Difference]: With dead ends: 1871 [2020-10-14 08:56:08,616 INFO L226 Difference]: Without dead ends: 1253 [2020-10-14 08:56:08,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:56:08,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-14 08:56:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1251. [2020-10-14 08:56:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1251 states. [2020-10-14 08:56:08,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1927 transitions. [2020-10-14 08:56:08,726 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1927 transitions. Word has length 97 [2020-10-14 08:56:08,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:08,727 INFO L479 AbstractCegarLoop]: Abstraction has 1251 states and 1927 transitions. [2020-10-14 08:56:08,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:08,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1927 transitions. [2020-10-14 08:56:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:56:08,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:08,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:08,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:56:08,732 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:08,733 INFO L82 PathProgramCache]: Analyzing trace with hash -772862150, now seen corresponding path program 1 times [2020-10-14 08:56:08,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:08,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482142109] [2020-10-14 08:56:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:08,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:08,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:08,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:10,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:13,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:13,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:13,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:56:13,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 08:56:13,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:14,027 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:14,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:14,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 08:56:14,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:14,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:14,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:14,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:14,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:56:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:14,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482142109] [2020-10-14 08:56:14,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:14,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:14,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549258199] [2020-10-14 08:56:14,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:14,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:14,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:14,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:14,115 INFO L87 Difference]: Start difference. First operand 1251 states and 1927 transitions. Second operand 6 states. [2020-10-14 08:56:14,389 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-14 08:56:15,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:15,559 INFO L93 Difference]: Finished difference Result 3597 states and 5599 transitions. [2020-10-14 08:56:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:15,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-14 08:56:15,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:15,581 INFO L225 Difference]: With dead ends: 3597 [2020-10-14 08:56:15,582 INFO L226 Difference]: Without dead ends: 2400 [2020-10-14 08:56:15,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2020-10-14 08:56:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2398. [2020-10-14 08:56:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-10-14 08:56:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3710 transitions. [2020-10-14 08:56:15,752 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3710 transitions. Word has length 98 [2020-10-14 08:56:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:15,753 INFO L479 AbstractCegarLoop]: Abstraction has 2398 states and 3710 transitions. [2020-10-14 08:56:15,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:15,754 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3710 transitions. [2020-10-14 08:56:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:56:15,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:15,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:15,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:56:15,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1450066527, now seen corresponding path program 1 times [2020-10-14 08:56:15,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:15,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856479398] [2020-10-14 08:56:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:15,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:15,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:20,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:20,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:56:20,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:56:20,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:56:20,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:20,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 08:56:20,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:21,048 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:21,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:21,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:21,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:21,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:56:21,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:21,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:21,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:21,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:21,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856479398] [2020-10-14 08:56:21,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:21,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:21,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569613174] [2020-10-14 08:56:21,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:21,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:21,100 INFO L87 Difference]: Start difference. First operand 2398 states and 3710 transitions. Second operand 6 states. [2020-10-14 08:56:21,336 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:56:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:22,449 INFO L93 Difference]: Finished difference Result 7031 states and 10930 transitions. [2020-10-14 08:56:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:22,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 08:56:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:22,485 INFO L225 Difference]: With dead ends: 7031 [2020-10-14 08:56:22,486 INFO L226 Difference]: Without dead ends: 4683 [2020-10-14 08:56:22,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:56:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2020-10-14 08:56:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4681. [2020-10-14 08:56:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4681 states. [2020-10-14 08:56:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 7237 transitions. [2020-10-14 08:56:22,846 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 7237 transitions. Word has length 99 [2020-10-14 08:56:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:22,847 INFO L479 AbstractCegarLoop]: Abstraction has 4681 states and 7237 transitions. [2020-10-14 08:56:22,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 7237 transitions. [2020-10-14 08:56:22,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:56:22,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:22,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:22,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:56:22,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:22,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2110336171, now seen corresponding path program 1 times [2020-10-14 08:56:22,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:22,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348956864] [2020-10-14 08:56:22,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:22,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:27,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:27,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:27,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:56:27,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:56:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:56:27,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:27,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 08:56:27,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:56:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:28,086 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:28,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:28,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:28,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:28,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:28,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:56:28,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:28,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:28,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:28,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348956864] [2020-10-14 08:56:28,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:28,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:56:28,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380280324] [2020-10-14 08:56:28,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:56:28,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:28,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:56:28,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:56:28,125 INFO L87 Difference]: Start difference. First operand 4681 states and 7237 transitions. Second operand 4 states. [2020-10-14 08:56:28,286 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:56:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:29,489 INFO L93 Difference]: Finished difference Result 13225 states and 20430 transitions. [2020-10-14 08:56:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:56:29,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:56:29,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:29,536 INFO L225 Difference]: With dead ends: 13225 [2020-10-14 08:56:29,536 INFO L226 Difference]: Without dead ends: 8999 [2020-10-14 08:56:29,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2020-10-14 08:56:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 8997. [2020-10-14 08:56:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8997 states. [2020-10-14 08:56:30,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8997 states to 8997 states and 13772 transitions. [2020-10-14 08:56:30,123 INFO L78 Accepts]: Start accepts. Automaton has 8997 states and 13772 transitions. Word has length 100 [2020-10-14 08:56:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:30,124 INFO L479 AbstractCegarLoop]: Abstraction has 8997 states and 13772 transitions. [2020-10-14 08:56:30,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:56:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8997 states and 13772 transitions. [2020-10-14 08:56:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:56:30,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:30,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:30,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:56:30,129 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:30,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1464631379, now seen corresponding path program 1 times [2020-10-14 08:56:30,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:30,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509401062] [2020-10-14 08:56:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:30,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:56:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:56:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:56:35,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:35,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:56:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 08:56:35,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:35,357 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:35,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:35,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:35,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:56:35,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:35,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:35,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:56:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:35,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509401062] [2020-10-14 08:56:35,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:35,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:35,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344069454] [2020-10-14 08:56:35,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:35,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:35,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:35,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:35,399 INFO L87 Difference]: Start difference. First operand 8997 states and 13772 transitions. Second operand 6 states. [2020-10-14 08:56:35,597 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:56:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:37,206 INFO L93 Difference]: Finished difference Result 24812 states and 38046 transitions. [2020-10-14 08:56:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:37,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:56:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:37,271 INFO L225 Difference]: With dead ends: 24812 [2020-10-14 08:56:37,271 INFO L226 Difference]: Without dead ends: 16618 [2020-10-14 08:56:37,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2020-10-14 08:56:37,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 13195. [2020-10-14 08:56:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13195 states. [2020-10-14 08:56:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13195 states to 13195 states and 20259 transitions. [2020-10-14 08:56:37,957 INFO L78 Accepts]: Start accepts. Automaton has 13195 states and 20259 transitions. Word has length 102 [2020-10-14 08:56:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:37,957 INFO L479 AbstractCegarLoop]: Abstraction has 13195 states and 20259 transitions. [2020-10-14 08:56:37,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 13195 states and 20259 transitions. [2020-10-14 08:56:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:56:37,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:37,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:37,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:56:37,963 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1474290498, now seen corresponding path program 1 times [2020-10-14 08:56:37,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:37,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890561931] [2020-10-14 08:56:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:38,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:42,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:42,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:56:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 08:56:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:43,181 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:43,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:43,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:56:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:43,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:43,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890561931] [2020-10-14 08:56:43,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:43,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:43,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056819395] [2020-10-14 08:56:43,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:43,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:43,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:43,219 INFO L87 Difference]: Start difference. First operand 13195 states and 20259 transitions. Second operand 6 states. [2020-10-14 08:56:43,413 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:56:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:45,342 INFO L93 Difference]: Finished difference Result 40269 states and 61773 transitions. [2020-10-14 08:56:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:45,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:56:45,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:45,416 INFO L225 Difference]: With dead ends: 40269 [2020-10-14 08:56:45,417 INFO L226 Difference]: Without dead ends: 27851 [2020-10-14 08:56:45,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27851 states. [2020-10-14 08:56:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27851 to 21991. [2020-10-14 08:56:46,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21991 states. [2020-10-14 08:56:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21991 states to 21991 states and 33834 transitions. [2020-10-14 08:56:46,592 INFO L78 Accepts]: Start accepts. Automaton has 21991 states and 33834 transitions. Word has length 102 [2020-10-14 08:56:46,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:46,593 INFO L479 AbstractCegarLoop]: Abstraction has 21991 states and 33834 transitions. [2020-10-14 08:56:46,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:46,593 INFO L276 IsEmpty]: Start isEmpty. Operand 21991 states and 33834 transitions. [2020-10-14 08:56:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:56:46,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:46,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:46,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:56:46,599 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:46,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:46,599 INFO L82 PathProgramCache]: Analyzing trace with hash -27138648, now seen corresponding path program 1 times [2020-10-14 08:56:46,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:46,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780029063] [2020-10-14 08:56:46,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:46,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:46,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:48,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:49,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:50,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:51,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:56:51,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 08:56:51,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:51,829 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:56:51,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:51,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:51,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:51,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780029063] [2020-10-14 08:56:51,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:51,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:51,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468348797] [2020-10-14 08:56:51,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:51,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:51,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:51,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:51,860 INFO L87 Difference]: Start difference. First operand 21991 states and 33834 transitions. Second operand 6 states. [2020-10-14 08:56:52,060 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:56:54,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:54,096 INFO L93 Difference]: Finished difference Result 54490 states and 83612 transitions. [2020-10-14 08:56:54,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:54,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:56:54,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:54,164 INFO L225 Difference]: With dead ends: 54490 [2020-10-14 08:56:54,164 INFO L226 Difference]: Without dead ends: 33624 [2020-10-14 08:56:54,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33624 states. [2020-10-14 08:56:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33624 to 26356. [2020-10-14 08:56:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26356 states. [2020-10-14 08:56:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26356 states to 26356 states and 40569 transitions. [2020-10-14 08:56:55,580 INFO L78 Accepts]: Start accepts. Automaton has 26356 states and 40569 transitions. Word has length 102 [2020-10-14 08:56:55,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:55,580 INFO L479 AbstractCegarLoop]: Abstraction has 26356 states and 40569 transitions. [2020-10-14 08:56:55,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:55,580 INFO L276 IsEmpty]: Start isEmpty. Operand 26356 states and 40569 transitions. [2020-10-14 08:56:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:56:55,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:55,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:55,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:56:55,586 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1123431897, now seen corresponding path program 1 times [2020-10-14 08:56:55,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:55,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513239586] [2020-10-14 08:56:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:55,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:57,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:58,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:00,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:00,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:57:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:57:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:57:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:00,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:57:00,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 08:57:00,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:00,805 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:57:00,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:00,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:00,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:00,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:00,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:00,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513239586] [2020-10-14 08:57:00,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:00,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:00,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485301381] [2020-10-14 08:57:00,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:00,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:00,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:00,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:00,833 INFO L87 Difference]: Start difference. First operand 26356 states and 40569 transitions. Second operand 6 states. [2020-10-14 08:57:01,026 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:57:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:03,197 INFO L93 Difference]: Finished difference Result 63844 states and 97939 transitions. [2020-10-14 08:57:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:03,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:57:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:03,256 INFO L225 Difference]: With dead ends: 63844 [2020-10-14 08:57:03,256 INFO L226 Difference]: Without dead ends: 38754 [2020-10-14 08:57:03,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38754 states. [2020-10-14 08:57:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38754 to 30686. [2020-10-14 08:57:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30686 states. [2020-10-14 08:57:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30686 states to 30686 states and 47248 transitions. [2020-10-14 08:57:04,578 INFO L78 Accepts]: Start accepts. Automaton has 30686 states and 47248 transitions. Word has length 102 [2020-10-14 08:57:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:04,579 INFO L479 AbstractCegarLoop]: Abstraction has 30686 states and 47248 transitions. [2020-10-14 08:57:04,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 30686 states and 47248 transitions. [2020-10-14 08:57:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:57:04,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:04,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:04,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:57:04,585 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:04,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash 2049146447, now seen corresponding path program 1 times [2020-10-14 08:57:04,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:04,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442618619] [2020-10-14 08:57:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:04,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:04,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:04,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:04,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:05,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:09,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-14 08:57:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:57:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:09,785 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:57:09,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:09,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:09,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442618619] [2020-10-14 08:57:09,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:09,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:09,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105522129] [2020-10-14 08:57:09,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:09,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:09,811 INFO L87 Difference]: Start difference. First operand 30686 states and 47248 transitions. Second operand 4 states. [2020-10-14 08:57:09,977 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:57:11,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:11,803 INFO L93 Difference]: Finished difference Result 64226 states and 99026 transitions. [2020-10-14 08:57:11,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:57:11,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:57:11,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:11,866 INFO L225 Difference]: With dead ends: 64226 [2020-10-14 08:57:11,866 INFO L226 Difference]: Without dead ends: 34912 [2020-10-14 08:57:11,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:57:11,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34912 states. [2020-10-14 08:57:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34912 to 34910. [2020-10-14 08:57:13,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34910 states. [2020-10-14 08:57:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34910 states to 34910 states and 53648 transitions. [2020-10-14 08:57:13,533 INFO L78 Accepts]: Start accepts. Automaton has 34910 states and 53648 transitions. Word has length 102 [2020-10-14 08:57:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:13,533 INFO L479 AbstractCegarLoop]: Abstraction has 34910 states and 53648 transitions. [2020-10-14 08:57:13,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 34910 states and 53648 transitions. [2020-10-14 08:57:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:57:13,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:13,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:13,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:57:13,540 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1806022096, now seen corresponding path program 1 times [2020-10-14 08:57:13,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:13,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374556003] [2020-10-14 08:57:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:13,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:14,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:14,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:15,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:17,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:18,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:57:18,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:57:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 08:57:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:18,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 08:57:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:18,776 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:57:18,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:18,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:18,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374556003] [2020-10-14 08:57:18,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:18,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:57:18,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678273880] [2020-10-14 08:57:18,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:57:18,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:18,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:57:18,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:18,801 INFO L87 Difference]: Start difference. First operand 34910 states and 53648 transitions. Second operand 4 states. [2020-10-14 08:57:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:22,810 INFO L93 Difference]: Finished difference Result 98658 states and 150930 transitions. [2020-10-14 08:57:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:57:22,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:57:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:22,894 INFO L225 Difference]: With dead ends: 98658 [2020-10-14 08:57:22,894 INFO L226 Difference]: Without dead ends: 65120 [2020-10-14 08:57:22,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:57:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65120 states. [2020-10-14 08:57:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65120 to 64094. [2020-10-14 08:57:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64094 states. [2020-10-14 08:57:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64094 states to 64094 states and 96848 transitions. [2020-10-14 08:57:27,268 INFO L78 Accepts]: Start accepts. Automaton has 64094 states and 96848 transitions. Word has length 102 [2020-10-14 08:57:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:27,268 INFO L479 AbstractCegarLoop]: Abstraction has 64094 states and 96848 transitions. [2020-10-14 08:57:27,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:57:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 64094 states and 96848 transitions. [2020-10-14 08:57:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:57:27,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:27,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:27,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:57:27,273 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1340609134, now seen corresponding path program 1 times [2020-10-14 08:57:27,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:27,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661086919] [2020-10-14 08:57:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:27,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:27,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:29,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:32,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 08:57:32,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:32,491 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:57:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:32,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:32,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:32,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:32,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:32,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661086919] [2020-10-14 08:57:32,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:32,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:32,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891025493] [2020-10-14 08:57:32,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:32,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:32,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:32,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:32,520 INFO L87 Difference]: Start difference. First operand 64094 states and 96848 transitions. Second operand 6 states. [2020-10-14 08:57:32,712 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:57:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:37,430 INFO L93 Difference]: Finished difference Result 148003 states and 223122 transitions. [2020-10-14 08:57:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:37,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:57:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:37,521 INFO L225 Difference]: With dead ends: 148003 [2020-10-14 08:57:37,521 INFO L226 Difference]: Without dead ends: 85281 [2020-10-14 08:57:37,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85281 states. [2020-10-14 08:57:42,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85281 to 71997. [2020-10-14 08:57:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71997 states. [2020-10-14 08:57:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71997 states to 71997 states and 108783 transitions. [2020-10-14 08:57:42,750 INFO L78 Accepts]: Start accepts. Automaton has 71997 states and 108783 transitions. Word has length 102 [2020-10-14 08:57:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:42,751 INFO L479 AbstractCegarLoop]: Abstraction has 71997 states and 108783 transitions. [2020-10-14 08:57:42,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 71997 states and 108783 transitions. [2020-10-14 08:57:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:57:42,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:42,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:42,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:57:42,755 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash -826326461, now seen corresponding path program 1 times [2020-10-14 08:57:42,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:42,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401290466] [2020-10-14 08:57:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:42,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:47,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:57:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:57:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 08:57:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:47,969 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:57:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:47,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:47,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:47,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401290466] [2020-10-14 08:57:47,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:47,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:57:47,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630609019] [2020-10-14 08:57:47,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:57:47,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:57:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:57:47,997 INFO L87 Difference]: Start difference. First operand 71997 states and 108783 transitions. Second operand 6 states. [2020-10-14 08:57:48,199 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:57:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:53,220 INFO L93 Difference]: Finished difference Result 167935 states and 253113 transitions. [2020-10-14 08:57:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:57:53,220 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 08:57:53,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:53,418 INFO L225 Difference]: With dead ends: 167935 [2020-10-14 08:57:53,418 INFO L226 Difference]: Without dead ends: 97341 [2020-10-14 08:57:53,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:53,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97341 states. [2020-10-14 08:57:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97341 to 80025. [2020-10-14 08:57:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80025 states. [2020-10-14 08:57:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80025 states to 80025 states and 120918 transitions. [2020-10-14 08:57:59,334 INFO L78 Accepts]: Start accepts. Automaton has 80025 states and 120918 transitions. Word has length 102 [2020-10-14 08:57:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:59,335 INFO L479 AbstractCegarLoop]: Abstraction has 80025 states and 120918 transitions. [2020-10-14 08:57:59,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:57:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 80025 states and 120918 transitions. [2020-10-14 08:57:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:57:59,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:59,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:59,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:57:59,341 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash -902878813, now seen corresponding path program 1 times [2020-10-14 08:57:59,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:59,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881599222] [2020-10-14 08:57:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:03,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:58:04,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:58:04,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:04,567 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:58:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:04,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:04,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:04,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:04,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881599222] [2020-10-14 08:58:04,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:04,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:58:04,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604258088] [2020-10-14 08:58:04,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:58:04,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:04,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:58:04,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:58:04,593 INFO L87 Difference]: Start difference. First operand 80025 states and 120918 transitions. Second operand 5 states. [2020-10-14 08:58:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:13,464 INFO L93 Difference]: Finished difference Result 132635 states and 199895 transitions. [2020-10-14 08:58:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:58:13,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 08:58:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:13,655 INFO L225 Difference]: With dead ends: 132635 [2020-10-14 08:58:13,655 INFO L226 Difference]: Without dead ends: 132633 [2020-10-14 08:58:13,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:58:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132633 states. [2020-10-14 08:58:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132633 to 80153. [2020-10-14 08:58:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80153 states. [2020-10-14 08:58:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80153 states to 80153 states and 120534 transitions. [2020-10-14 08:58:18,561 INFO L78 Accepts]: Start accepts. Automaton has 80153 states and 120534 transitions. Word has length 103 [2020-10-14 08:58:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:18,561 INFO L479 AbstractCegarLoop]: Abstraction has 80153 states and 120534 transitions. [2020-10-14 08:58:18,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:58:18,561 INFO L276 IsEmpty]: Start isEmpty. Operand 80153 states and 120534 transitions. [2020-10-14 08:58:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:58:18,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:18,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:18,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:58:18,567 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:18,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:18,567 INFO L82 PathProgramCache]: Analyzing trace with hash 384805023, now seen corresponding path program 1 times [2020-10-14 08:58:18,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:18,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844806080] [2020-10-14 08:58:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:18,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:18,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:21,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:58:23,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:23,937 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:58:23,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:23,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:23,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:23,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:23,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:23,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844806080] [2020-10-14 08:58:23,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:23,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:58:23,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302848864] [2020-10-14 08:58:23,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:58:23,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:23,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:58:23,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:23,971 INFO L87 Difference]: Start difference. First operand 80153 states and 120534 transitions. Second operand 9 states. [2020-10-14 08:58:24,216 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:58:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:36,310 INFO L93 Difference]: Finished difference Result 200078 states and 300154 transitions. [2020-10-14 08:58:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:58:36,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-14 08:58:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:36,482 INFO L225 Difference]: With dead ends: 200078 [2020-10-14 08:58:36,482 INFO L226 Difference]: Without dead ends: 121051 [2020-10-14 08:58:36,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:58:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121051 states. [2020-10-14 08:58:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121051 to 80153. [2020-10-14 08:58:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80153 states. [2020-10-14 08:58:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80153 states to 80153 states and 120475 transitions. [2020-10-14 08:58:44,185 INFO L78 Accepts]: Start accepts. Automaton has 80153 states and 120475 transitions. Word has length 103 [2020-10-14 08:58:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:44,185 INFO L479 AbstractCegarLoop]: Abstraction has 80153 states and 120475 transitions. [2020-10-14 08:58:44,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:58:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 80153 states and 120475 transitions. [2020-10-14 08:58:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:58:44,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:44,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:44,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:58:44,191 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1553453147, now seen corresponding path program 1 times [2020-10-14 08:58:44,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:44,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170258000] [2020-10-14 08:58:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:45,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:58:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:58:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 08:58:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:49,594 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:58:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:49,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:49,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:49,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:49,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:49,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:58:49,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:49,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:58:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:49,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:58:49,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:49,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170258000] [2020-10-14 08:58:49,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:49,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:58:49,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328294922] [2020-10-14 08:58:49,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:58:49,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:49,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:58:49,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:58:49,648 INFO L87 Difference]: Start difference. First operand 80153 states and 120475 transitions. Second operand 11 states. [2020-10-14 08:58:49,905 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:59:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:59:03,924 INFO L93 Difference]: Finished difference Result 200198 states and 300263 transitions. [2020-10-14 08:59:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:59:03,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-14 08:59:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:59:04,072 INFO L225 Difference]: With dead ends: 200198 [2020-10-14 08:59:04,072 INFO L226 Difference]: Without dead ends: 121051 [2020-10-14 08:59:04,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:59:04,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121051 states. [2020-10-14 08:59:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121051 to 80153. [2020-10-14 08:59:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80153 states. [2020-10-14 08:59:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80153 states to 80153 states and 120451 transitions. [2020-10-14 08:59:12,225 INFO L78 Accepts]: Start accepts. Automaton has 80153 states and 120451 transitions. Word has length 104 [2020-10-14 08:59:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:59:12,225 INFO L479 AbstractCegarLoop]: Abstraction has 80153 states and 120451 transitions. [2020-10-14 08:59:12,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:59:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand 80153 states and 120451 transitions. [2020-10-14 08:59:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:59:12,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:59:12,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:59:12,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:59:12,231 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:59:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:59:12,231 INFO L82 PathProgramCache]: Analyzing trace with hash 4498326, now seen corresponding path program 1 times [2020-10-14 08:59:12,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:59:12,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621471696] [2020-10-14 08:59:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:59:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:13,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:15,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:16,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:17,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 08:59:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:17,648 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 08:59:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:59:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:59:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:59:17,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:59:17,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:59:17,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:59:17,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:59:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:59:17,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621471696] [2020-10-14 08:59:17,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:59:17,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:59:17,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235314756] [2020-10-14 08:59:17,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:59:17,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:59:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:59:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:59:17,696 INFO L87 Difference]: Start difference. First operand 80153 states and 120451 transitions. Second operand 10 states. [2020-10-14 08:59:17,922 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 164