/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:57:40,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:57:40,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:57:40,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:57:40,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:57:40,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:57:40,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:57:40,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:57:40,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:57:40,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:57:40,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:57:40,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:57:40,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:57:40,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:57:40,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:57:40,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:57:40,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:57:40,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:57:40,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:57:40,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:57:40,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:57:40,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:57:40,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:57:40,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:57:40,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:57:40,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:57:40,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:57:40,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:57:40,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:57:40,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:57:40,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:57:40,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:57:40,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:57:40,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:57:40,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:57:40,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:57:40,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:57:40,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:57:40,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:57:40,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:57:40,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:57:40,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 03:57:40,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:57:40,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:57:40,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:57:40,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:57:40,750 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:57:40,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:57:40,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:57:40,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:57:40,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:57:40,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:57:40,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:57:40,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:57:40,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:57:40,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:57:40,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:57:40,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:57:40,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:57:40,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:57:40,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:57:40,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:57:40,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:57:40,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:57:40,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:57:40,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:57:40,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:57:40,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:57:40,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:57:40,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:57:40,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:57:40,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:57:41,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:57:41,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:57:41,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:57:41,107 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:57:41,108 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:57:41,108 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:57:41,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a8636e81/bf8b554c79fd4443af4d80aef20f01db/FLAG0ba1ac0f0 [2020-10-15 03:57:41,710 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:57:41,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:57:41,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a8636e81/bf8b554c79fd4443af4d80aef20f01db/FLAG0ba1ac0f0 [2020-10-15 03:57:42,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a8636e81/bf8b554c79fd4443af4d80aef20f01db [2020-10-15 03:57:42,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:57:42,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:57:42,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:57:42,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:57:42,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:57:42,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248aaf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42, skipping insertion in model container [2020-10-15 03:57:42,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:57:42,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:57:42,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:57:42,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:57:42,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:57:42,746 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:57:42,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42 WrapperNode [2020-10-15 03:57:42,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:57:42,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:57:42,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:57:42,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:57:42,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... [2020-10-15 03:57:42,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:57:42,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:57:42,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:57:42,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:57:42,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:57:42,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:57:42,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:57:42,901 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:57:42,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:57:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:57:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:57:42,903 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:57:42,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:57:44,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:57:44,156 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:57:44,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:57:44 BoogieIcfgContainer [2020-10-15 03:57:44,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:57:44,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:57:44,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:57:44,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:57:44,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:57:42" (1/3) ... [2020-10-15 03:57:44,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112b4047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:57:44, skipping insertion in model container [2020-10-15 03:57:44,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:57:42" (2/3) ... [2020-10-15 03:57:44,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112b4047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:57:44, skipping insertion in model container [2020-10-15 03:57:44,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:57:44" (3/3) ... [2020-10-15 03:57:44,171 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:57:44,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:57:44,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:57:44,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:57:44,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:57:44,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:57:44,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:57:44,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:57:44,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:57:44,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:57:44,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:57:44,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:57:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states. [2020-10-15 03:57:44,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-15 03:57:44,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:44,270 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, 1, 1, 1] [2020-10-15 03:57:44,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:44,276 INFO L82 PathProgramCache]: Analyzing trace with hash 575977303, now seen corresponding path program 1 times [2020-10-15 03:57:44,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:44,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339629519] [2020-10-15 03:57:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:49,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:49,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-15 03:57:49,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:57:49,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-15 03:57:49,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:49,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 03:57:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:57:49,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 03:57:50,242 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:57:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:50,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:50,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:50,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:50,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:57:50,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:50,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:50,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339629519] [2020-10-15 03:57:50,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:50,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:57:50,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875026229] [2020-10-15 03:57:50,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:50,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:50,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:50,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:50,353 INFO L87 Difference]: Start difference. First operand 263 states. Second operand 9 states. [2020-10-15 03:57:50,792 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:57:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:52,608 INFO L93 Difference]: Finished difference Result 1175 states and 1898 transitions. [2020-10-15 03:57:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 03:57:52,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2020-10-15 03:57:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:52,645 INFO L225 Difference]: With dead ends: 1175 [2020-10-15 03:57:52,646 INFO L226 Difference]: Without dead ends: 1026 [2020-10-15 03:57:52,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:57:52,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-15 03:57:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 399. [2020-10-15 03:57:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-10-15 03:57:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 598 transitions. [2020-10-15 03:57:52,781 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 598 transitions. Word has length 100 [2020-10-15 03:57:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:52,782 INFO L479 AbstractCegarLoop]: Abstraction has 399 states and 598 transitions. [2020-10-15 03:57:52,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:57:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 598 transitions. [2020-10-15 03:57:52,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-15 03:57:52,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:52,794 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] [2020-10-15 03:57:52,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:57:52,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:52,796 INFO L82 PathProgramCache]: Analyzing trace with hash 332738772, now seen corresponding path program 1 times [2020-10-15 03:57:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180496198] [2020-10-15 03:57:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:54,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:54,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-15 03:57:54,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1161 [2020-10-15 03:57:54,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:54,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:57:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 03:57:54,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-15 03:57:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:54,435 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:57:54,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:54,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:54,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:54,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:57:54,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:54,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:57:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:57:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 03:57:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:54,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180496198] [2020-10-15 03:57:54,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:54,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:57:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641480995] [2020-10-15 03:57:54,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:57:54,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:54,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:57:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:54,587 INFO L87 Difference]: Start difference. First operand 399 states and 598 transitions. Second operand 9 states. [2020-10-15 03:57:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:57:57,936 INFO L93 Difference]: Finished difference Result 1976 states and 3074 transitions. [2020-10-15 03:57:57,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 03:57:57,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-15 03:57:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:57:57,947 INFO L225 Difference]: With dead ends: 1976 [2020-10-15 03:57:57,947 INFO L226 Difference]: Without dead ends: 1680 [2020-10-15 03:57:57,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:57:57,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-10-15 03:57:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1670. [2020-10-15 03:57:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-10-15 03:57:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2591 transitions. [2020-10-15 03:57:58,079 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2591 transitions. Word has length 101 [2020-10-15 03:57:58,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:57:58,080 INFO L479 AbstractCegarLoop]: Abstraction has 1670 states and 2591 transitions. [2020-10-15 03:57:58,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:57:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2591 transitions. [2020-10-15 03:57:58,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:57:58,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:57:58,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:57:58,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:57:58,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:57:58,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:57:58,085 INFO L82 PathProgramCache]: Analyzing trace with hash -231652513, now seen corresponding path program 1 times [2020-10-15 03:57:58,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:57:58,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546813992] [2020-10-15 03:57:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:57:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:58,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 730 [2020-10-15 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:57:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:57:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:57:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:57:59,101 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:57:59,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:57:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:57:59,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:57:59,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:57:59,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:57:59,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:57:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:57:59,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:57:59,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:57:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:57:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:57:59,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:57:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:57:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:57:59,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546813992] [2020-10-15 03:57:59,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:57:59,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:57:59,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222060024] [2020-10-15 03:57:59,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:57:59,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:57:59,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:57:59,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:57:59,163 INFO L87 Difference]: Start difference. First operand 1670 states and 2591 transitions. Second operand 6 states. [2020-10-15 03:57:59,395 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-15 03:58:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:00,824 INFO L93 Difference]: Finished difference Result 4498 states and 7058 transitions. [2020-10-15 03:58:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:00,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:00,841 INFO L225 Difference]: With dead ends: 4498 [2020-10-15 03:58:00,842 INFO L226 Difference]: Without dead ends: 2922 [2020-10-15 03:58:00,848 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 [2020-10-15 03:58:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2020-10-15 03:58:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2020-10-15 03:58:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2920 states. [2020-10-15 03:58:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4559 transitions. [2020-10-15 03:58:01,020 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4559 transitions. Word has length 102 [2020-10-15 03:58:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:01,021 INFO L479 AbstractCegarLoop]: Abstraction has 2920 states and 4559 transitions. [2020-10-15 03:58:01,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4559 transitions. [2020-10-15 03:58:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:01,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:01,025 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] [2020-10-15 03:58:01,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:58:01,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:01,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:01,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1508533522, now seen corresponding path program 1 times [2020-10-15 03:58:01,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:01,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556309615] [2020-10-15 03:58:01,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:01,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:01,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:01,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:01,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-15 03:58:01,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:01,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:01,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 03:58:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:02,031 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:02,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:02,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:02,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 03:58:02,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:02,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:02,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556309615] [2020-10-15 03:58:02,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:02,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:02,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515169963] [2020-10-15 03:58:02,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:02,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:02,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:02,101 INFO L87 Difference]: Start difference. First operand 2920 states and 4559 transitions. Second operand 6 states. [2020-10-15 03:58:02,334 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-15 03:58:03,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:03,709 INFO L93 Difference]: Finished difference Result 8092 states and 12709 transitions. [2020-10-15 03:58:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:03,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:03,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:03,740 INFO L225 Difference]: With dead ends: 8092 [2020-10-15 03:58:03,740 INFO L226 Difference]: Without dead ends: 5296 [2020-10-15 03:58:03,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5296 states. [2020-10-15 03:58:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5296 to 5294. [2020-10-15 03:58:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5294 states. [2020-10-15 03:58:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 8266 transitions. [2020-10-15 03:58:04,113 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 8266 transitions. Word has length 102 [2020-10-15 03:58:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:04,115 INFO L479 AbstractCegarLoop]: Abstraction has 5294 states and 8266 transitions. [2020-10-15 03:58:04,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 8266 transitions. [2020-10-15 03:58:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:04,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:04,119 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] [2020-10-15 03:58:04,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:58:04,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash -492820867, now seen corresponding path program 1 times [2020-10-15 03:58:04,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:04,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622469118] [2020-10-15 03:58:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:04,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-15 03:58:04,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:04,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:04,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 03:58:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:05,062 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:05,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:05,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:05,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:05,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:05,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 03:58:05,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:05,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:05,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:05,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:05,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622469118] [2020-10-15 03:58:05,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:05,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:05,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126221242] [2020-10-15 03:58:05,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:05,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:05,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:05,133 INFO L87 Difference]: Start difference. First operand 5294 states and 8266 transitions. Second operand 6 states. [2020-10-15 03:58:05,478 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:58:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:07,189 INFO L93 Difference]: Finished difference Result 14945 states and 23411 transitions. [2020-10-15 03:58:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:07,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:07,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:07,238 INFO L225 Difference]: With dead ends: 14945 [2020-10-15 03:58:07,238 INFO L226 Difference]: Without dead ends: 9812 [2020-10-15 03:58:07,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:58:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9812 states. [2020-10-15 03:58:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9812 to 9810. [2020-10-15 03:58:07,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9810 states. [2020-10-15 03:58:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9810 states to 9810 states and 15284 transitions. [2020-10-15 03:58:07,772 INFO L78 Accepts]: Start accepts. Automaton has 9810 states and 15284 transitions. Word has length 102 [2020-10-15 03:58:07,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:07,773 INFO L479 AbstractCegarLoop]: Abstraction has 9810 states and 15284 transitions. [2020-10-15 03:58:07,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:07,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9810 states and 15284 transitions. [2020-10-15 03:58:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:07,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:07,779 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] [2020-10-15 03:58:07,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:58:07,780 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2042026484, now seen corresponding path program 1 times [2020-10-15 03:58:07,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:07,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49202863] [2020-10-15 03:58:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:07,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:08,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:08,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:08,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:08,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-15 03:58:08,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:08,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-15 03:58:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:08,712 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:08,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:58:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:08,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:08,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49202863] [2020-10-15 03:58:08,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:08,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:08,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370127124] [2020-10-15 03:58:08,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:08,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:08,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:08,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:08,778 INFO L87 Difference]: Start difference. First operand 9810 states and 15284 transitions. Second operand 6 states. [2020-10-15 03:58:08,986 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:58:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:10,954 INFO L93 Difference]: Finished difference Result 28324 states and 44252 transitions. [2020-10-15 03:58:10,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:10,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:11,015 INFO L225 Difference]: With dead ends: 28324 [2020-10-15 03:58:11,016 INFO L226 Difference]: Without dead ends: 18716 [2020-10-15 03:58:11,036 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 [2020-10-15 03:58:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18716 states. [2020-10-15 03:58:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18716 to 18714. [2020-10-15 03:58:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18714 states. [2020-10-15 03:58:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18714 states to 18714 states and 29118 transitions. [2020-10-15 03:58:12,122 INFO L78 Accepts]: Start accepts. Automaton has 18714 states and 29118 transitions. Word has length 102 [2020-10-15 03:58:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:12,123 INFO L479 AbstractCegarLoop]: Abstraction has 18714 states and 29118 transitions. [2020-10-15 03:58:12,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 18714 states and 29118 transitions. [2020-10-15 03:58:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:12,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:12,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:58:12,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:58:12,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:12,132 INFO L82 PathProgramCache]: Analyzing trace with hash 398122960, now seen corresponding path program 1 times [2020-10-15 03:58:12,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:12,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124569334] [2020-10-15 03:58:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:12,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:12,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:12,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:12,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-15 03:58:12,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:12,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:12,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:12,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 03:58:12,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:12,926 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:12,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:12,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:12,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:12,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-15 03:58:12,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:13,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124569334] [2020-10-15 03:58:13,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:13,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:13,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685645966] [2020-10-15 03:58:13,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:13,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:13,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:13,583 INFO L87 Difference]: Start difference. First operand 18714 states and 29118 transitions. Second operand 6 states. [2020-10-15 03:58:13,909 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-15 03:58:16,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:16,976 INFO L93 Difference]: Finished difference Result 55415 states and 86183 transitions. [2020-10-15 03:58:16,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:16,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:17,065 INFO L225 Difference]: With dead ends: 55415 [2020-10-15 03:58:17,065 INFO L226 Difference]: Without dead ends: 36772 [2020-10-15 03:58:17,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36772 states. [2020-10-15 03:58:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36772 to 36770. [2020-10-15 03:58:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36770 states. [2020-10-15 03:58:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36770 states to 36770 states and 56823 transitions. [2020-10-15 03:58:18,988 INFO L78 Accepts]: Start accepts. Automaton has 36770 states and 56823 transitions. Word has length 102 [2020-10-15 03:58:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:18,989 INFO L479 AbstractCegarLoop]: Abstraction has 36770 states and 56823 transitions. [2020-10-15 03:58:18,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:18,989 INFO L276 IsEmpty]: Start isEmpty. Operand 36770 states and 56823 transitions. [2020-10-15 03:58:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-15 03:58:19,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:19,000 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] [2020-10-15 03:58:19,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:58:19,001 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:19,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:19,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1723478081, now seen corresponding path program 1 times [2020-10-15 03:58:19,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:19,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577354909] [2020-10-15 03:58:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:19,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:19,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-15 03:58:19,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 03:58:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-15 03:58:19,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:19,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:19,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:58:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:58:19,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-15 03:58:19,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:19,779 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:19,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:19,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:19,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 03:58:19,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:19,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:58:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:19,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:58:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:20,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577354909] [2020-10-15 03:58:20,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:20,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:58:20,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424633141] [2020-10-15 03:58:20,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:58:20,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:20,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:58:20,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:58:20,097 INFO L87 Difference]: Start difference. First operand 36770 states and 56823 transitions. Second operand 6 states. [2020-10-15 03:58:20,370 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:58:25,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:25,797 INFO L93 Difference]: Finished difference Result 109079 states and 168362 transitions. [2020-10-15 03:58:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:58:25,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-15 03:58:25,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:58:25,959 INFO L225 Difference]: With dead ends: 109079 [2020-10-15 03:58:25,959 INFO L226 Difference]: Without dead ends: 72364 [2020-10-15 03:58:26,032 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 [2020-10-15 03:58:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72364 states. [2020-10-15 03:58:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72364 to 72362. [2020-10-15 03:58:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72362 states. [2020-10-15 03:58:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72362 states to 72362 states and 110891 transitions. [2020-10-15 03:58:31,199 INFO L78 Accepts]: Start accepts. Automaton has 72362 states and 110891 transitions. Word has length 102 [2020-10-15 03:58:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:58:31,200 INFO L479 AbstractCegarLoop]: Abstraction has 72362 states and 110891 transitions. [2020-10-15 03:58:31,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:58:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72362 states and 110891 transitions. [2020-10-15 03:58:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:58:31,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:58:31,217 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] [2020-10-15 03:58:31,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:58:31,217 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:58:31,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:58:31,218 INFO L82 PathProgramCache]: Analyzing trace with hash 323085481, now seen corresponding path program 1 times [2020-10-15 03:58:31,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:58:31,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208179167] [2020-10-15 03:58:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:58:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:31,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:58:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:58:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2628 [2020-10-15 03:58:33,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:33,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:58:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:58:33,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:58:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:58:34,138 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2020-10-15 03:58:34,341 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:58:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:58:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:58:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:58:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:58:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:58:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:58:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:58:34,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:58:34,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:58:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:58:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:58:34,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:58:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:58:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:58:34,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208179167] [2020-10-15 03:58:34,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:58:34,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:58:34,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540275593] [2020-10-15 03:58:34,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:58:34,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:58:34,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:58:34,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:58:34,395 INFO L87 Difference]: Start difference. First operand 72362 states and 110891 transitions. Second operand 9 states. [2020-10-15 03:58:34,642 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:58:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:58:59,931 INFO L93 Difference]: Finished difference Result 403575 states and 614820 transitions. [2020-10-15 03:58:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:58:59,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:58:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:00,507 INFO L225 Difference]: With dead ends: 403575 [2020-10-15 03:59:00,507 INFO L226 Difference]: Without dead ends: 359129 [2020-10-15 03:59:00,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:59:00,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359129 states. [2020-10-15 03:59:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359129 to 72787. [2020-10-15 03:59:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72787 states. [2020-10-15 03:59:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72787 states to 72787 states and 111474 transitions. [2020-10-15 03:59:08,993 INFO L78 Accepts]: Start accepts. Automaton has 72787 states and 111474 transitions. Word has length 103 [2020-10-15 03:59:08,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:08,993 INFO L479 AbstractCegarLoop]: Abstraction has 72787 states and 111474 transitions. [2020-10-15 03:59:08,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 72787 states and 111474 transitions. [2020-10-15 03:59:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:09,010 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] [2020-10-15 03:59:09,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:59:09,011 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:09,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1931323127, now seen corresponding path program 1 times [2020-10-15 03:59:09,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:09,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745465789] [2020-10-15 03:59:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:09,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:12,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:12,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:12,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2973 [2020-10-15 03:59:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:12,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:59:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-15 03:59:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:12,488 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:59:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:12,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:12,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:12,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:12,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:12,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745465789] [2020-10-15 03:59:12,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:12,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:12,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069263228] [2020-10-15 03:59:12,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:12,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:12,540 INFO L87 Difference]: Start difference. First operand 72787 states and 111474 transitions. Second operand 9 states. [2020-10-15 03:59:12,798 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:59:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:59:48,208 INFO L93 Difference]: Finished difference Result 383383 states and 586358 transitions. [2020-10-15 03:59:48,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 03:59:48,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 03:59:48,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:59:48,826 INFO L225 Difference]: With dead ends: 383383 [2020-10-15 03:59:48,826 INFO L226 Difference]: Without dead ends: 344888 [2020-10-15 03:59:48,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2020-10-15 03:59:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344888 states. [2020-10-15 03:59:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344888 to 73709. [2020-10-15 03:59:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73709 states. [2020-10-15 03:59:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73709 states to 73709 states and 112736 transitions. [2020-10-15 03:59:57,754 INFO L78 Accepts]: Start accepts. Automaton has 73709 states and 112736 transitions. Word has length 103 [2020-10-15 03:59:57,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:59:57,755 INFO L479 AbstractCegarLoop]: Abstraction has 73709 states and 112736 transitions. [2020-10-15 03:59:57,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:59:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 73709 states and 112736 transitions. [2020-10-15 03:59:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 03:59:57,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:59:57,768 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] [2020-10-15 03:59:57,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:59:57,769 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:59:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:59:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1821471383, now seen corresponding path program 1 times [2020-10-15 03:59:57,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:59:57,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246168206] [2020-10-15 03:59:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:59:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:57,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 03:59:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 03:59:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-15 03:59:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:59:59,459 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 03:59:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:59:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:59:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:59:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:59:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:59:59,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:59:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:59:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:59:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:59:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:59:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:59:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:59:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:59:59,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:59:59,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246168206] [2020-10-15 03:59:59,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:59:59,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:59:59,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890850961] [2020-10-15 03:59:59,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:59:59,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:59:59,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:59:59,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:59:59,512 INFO L87 Difference]: Start difference. First operand 73709 states and 112736 transitions. Second operand 9 states. [2020-10-15 03:59:59,762 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 04:00:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:00:35,834 INFO L93 Difference]: Finished difference Result 317288 states and 483805 transitions. [2020-10-15 04:00:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 04:00:35,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-15 04:00:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:00:36,288 INFO L225 Difference]: With dead ends: 317288 [2020-10-15 04:00:36,288 INFO L226 Difference]: Without dead ends: 290982 [2020-10-15 04:00:36,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-15 04:00:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290982 states. [2020-10-15 04:00:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290982 to 75197. [2020-10-15 04:00:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75197 states. [2020-10-15 04:00:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75197 states to 75197 states and 114854 transitions. [2020-10-15 04:00:49,384 INFO L78 Accepts]: Start accepts. Automaton has 75197 states and 114854 transitions. Word has length 103 [2020-10-15 04:00:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:00:49,385 INFO L479 AbstractCegarLoop]: Abstraction has 75197 states and 114854 transitions. [2020-10-15 04:00:49,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 04:00:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 75197 states and 114854 transitions. [2020-10-15 04:00:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-15 04:00:49,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:00:49,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:00:49,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 04:00:49,401 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:00:49,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:00:49,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1519288777, now seen corresponding path program 1 times [2020-10-15 04:00:49,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:00:49,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115590355] [2020-10-15 04:00:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:00:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:49,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:51,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 04:00:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:00:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 04:00:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:00:51,531 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-15 04:00:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:00:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:00:51,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:00:51,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:00:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:00:51,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:00:51,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:00:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:00:51,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115590355] [2020-10-15 04:00:51,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:00:51,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 04:00:51,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409831712] [2020-10-15 04:00:51,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 04:00:51,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:00:51,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 04:00:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 04:00:51,566 INFO L87 Difference]: Start difference. First operand 75197 states and 114854 transitions. Second operand 9 states. [2020-10-15 04:00:51,830 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181