/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:43:58,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:43:58,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:43:58,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:43:58,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:43:58,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:43:58,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:43:58,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:43:58,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:43:58,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:43:58,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:43:58,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:43:58,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:43:58,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:43:58,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:43:58,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:43:58,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:43:58,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:43:58,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:43:58,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:43:58,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:43:58,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:43:58,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:43:58,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:43:58,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:43:58,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:43:58,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:43:58,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:43:58,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:43:58,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:43:58,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:43:58,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:43:58,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:43:58,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:43:58,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:43:58,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:43:58,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:43:58,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:43:58,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:43:58,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:43:58,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:43:58,811 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 [2020-10-13 14:43:58,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:43:58,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:43:58,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:43:58,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:43:58,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:43:58,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:43:58,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:43:58,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:43:58,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:43:58,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:43:58,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:43:58,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:43:58,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:43:58,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:43:58,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:43:58,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:43:58,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:43:58,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:43:58,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:43:58,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:43:58,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:43:58,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:43:58,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:43:58,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:43:58,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:43:58,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:43:58,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:43:58,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:43:58,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:43:58,876 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:43:59,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:43:59,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:43:59,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:43:59,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:43:59,242 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:43:59,243 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:43:59,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426da0a13/82d4229a13c04fc0b875016c2dc7a4d2/FLAG0402f6721 [2020-10-13 14:44:00,149 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:44:00,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:44:00,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426da0a13/82d4229a13c04fc0b875016c2dc7a4d2/FLAG0402f6721 [2020-10-13 14:44:00,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/426da0a13/82d4229a13c04fc0b875016c2dc7a4d2 [2020-10-13 14:44:00,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:44:00,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:44:00,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:44:00,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:44:00,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:44:00,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:44:00" (1/1) ... [2020-10-13 14:44:00,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc325c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:00, skipping insertion in model container [2020-10-13 14:44:00,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:44:00" (1/1) ... [2020-10-13 14:44:00,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:44:01,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:44:03,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:44:03,343 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:44:04,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:44:04,383 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:44:04,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04 WrapperNode [2020-10-13 14:44:04,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:44:04,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:44:04,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:44:04,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:44:04,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (1/1) ... [2020-10-13 14:44:04,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:44:04,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:44:04,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:44:04,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:44:04,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (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 [2020-10-13 14:44:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:44:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:44:04,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:44:04,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:44:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:44:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:44:04,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:44:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:44:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:44:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:44:04,942 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:44:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:44:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:44:04,943 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:44:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:44:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:44:04,944 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:44:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:44:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:44:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:44:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:44:13,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:44:13,412 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:44:13,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:44:13 BoogieIcfgContainer [2020-10-13 14:44:13,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:44:13,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:44:13,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:44:13,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:44:13,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:44:00" (1/3) ... [2020-10-13 14:44:13,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaeda3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:44:13, skipping insertion in model container [2020-10-13 14:44:13,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:44:04" (2/3) ... [2020-10-13 14:44:13,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaeda3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:44:13, skipping insertion in model container [2020-10-13 14:44:13,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:44:13" (3/3) ... [2020-10-13 14:44:13,453 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2020-10-13 14:44:13,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:44:13,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-10-13 14:44:13,492 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-10-13 14:44:13,541 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:44:13,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:44:13,542 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:44:13,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:44:13,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:44:13,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:44:13,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:44:13,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:44:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states. [2020-10-13 14:44:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:44:13,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:44:13,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:44:13,671 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:44:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:44:13,678 INFO L82 PathProgramCache]: Analyzing trace with hash 634537729, now seen corresponding path program 1 times [2020-10-13 14:44:13,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:44:13,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102095733] [2020-10-13 14:44:13,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:44:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:14,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:15,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:19,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:19,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:44:19,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:44:19,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:44:19,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:44:19,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:44:19,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:44:19,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:44:27,116 WARN L193 SmtUtils]: Spent 7.18 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:44:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:44:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:44:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:44:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:44:27,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:44:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:44:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-13 14:44:27,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:44:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:44:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:44:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:44:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:44:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:44:27,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102095733] [2020-10-13 14:44:27,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:44:27,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:44:27,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918969077] [2020-10-13 14:44:27,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:44:27,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:44:27,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:44:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:44:27,581 INFO L87 Difference]: Start difference. First operand 3737 states. Second operand 6 states. [2020-10-13 14:44:35,167 WARN L193 SmtUtils]: Spent 7.22 s on a formula simplification that was a NOOP. DAG size: 1384 [2020-10-13 14:45:33,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:45:33,032 INFO L93 Difference]: Finished difference Result 6992 states and 12116 transitions. [2020-10-13 14:45:33,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:45:33,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-13 14:45:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:45:33,078 INFO L225 Difference]: With dead ends: 6992 [2020-10-13 14:45:33,078 INFO L226 Difference]: Without dead ends: 4467 [2020-10-13 14:45:33,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:45:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4467 states. [2020-10-13 14:45:33,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4467 to 4442. [2020-10-13 14:45:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4442 states. [2020-10-13 14:45:33,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 5740 transitions. [2020-10-13 14:45:33,328 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 5740 transitions. Word has length 69 [2020-10-13 14:45:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:45:33,329 INFO L479 AbstractCegarLoop]: Abstraction has 4442 states and 5740 transitions. [2020-10-13 14:45:33,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:45:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 5740 transitions. [2020-10-13 14:45:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:45:33,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:45:33,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:45:33,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:45:33,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:45:33,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:45:33,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1928533741, now seen corresponding path program 1 times [2020-10-13 14:45:33,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:45:33,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505806906] [2020-10-13 14:45:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:45:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:33,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:33,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:35,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:38,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:45:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:45:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-13 14:45:38,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:45:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:45:38,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:45:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:45:46,188 WARN L193 SmtUtils]: Spent 7.29 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:45:46,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:45:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:45:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:45:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:45:46,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:45:46,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:45:46,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-13 14:45:46,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:45:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:45:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:45:46,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:45:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:45:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:45:46,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505806906] [2020-10-13 14:45:46,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:45:46,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:45:46,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802703080] [2020-10-13 14:45:46,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:45:46,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:45:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:45:46,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:45:46,502 INFO L87 Difference]: Start difference. First operand 4442 states and 5740 transitions. Second operand 6 states. [2020-10-13 14:45:53,523 WARN L193 SmtUtils]: Spent 6.84 s on a formula simplification that was a NOOP. DAG size: 1384 [2020-10-13 14:46:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:46:27,881 INFO L93 Difference]: Finished difference Result 8199 states and 10580 transitions. [2020-10-13 14:46:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:46:27,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-13 14:46:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:46:27,907 INFO L225 Difference]: With dead ends: 8199 [2020-10-13 14:46:27,907 INFO L226 Difference]: Without dead ends: 5063 [2020-10-13 14:46:27,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:46:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5063 states. [2020-10-13 14:46:28,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5063 to 5043. [2020-10-13 14:46:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5043 states. [2020-10-13 14:46:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5043 states to 5043 states and 6540 transitions. [2020-10-13 14:46:28,109 INFO L78 Accepts]: Start accepts. Automaton has 5043 states and 6540 transitions. Word has length 70 [2020-10-13 14:46:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:46:28,109 INFO L479 AbstractCegarLoop]: Abstraction has 5043 states and 6540 transitions. [2020-10-13 14:46:28,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:46:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5043 states and 6540 transitions. [2020-10-13 14:46:28,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:46:28,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:46:28,119 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] [2020-10-13 14:46:28,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:46:28,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:46:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:46:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2066443107, now seen corresponding path program 1 times [2020-10-13 14:46:28,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:46:28,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318436354] [2020-10-13 14:46:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:46:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:28,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:31,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:33,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:33,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:46:33,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:46:33,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 14:46:33,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:33,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:46:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:46:33,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:46:33,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:46:40,602 WARN L193 SmtUtils]: Spent 7.04 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:46:40,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:46:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:46:40,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:46:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:46:40,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:46:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:46:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 14:46:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:46:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:46:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:46:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:46:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:46:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:46:40,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318436354] [2020-10-13 14:46:40,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:46:40,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:46:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401397923] [2020-10-13 14:46:40,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:46:40,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:46:40,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:46:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:46:40,875 INFO L87 Difference]: Start difference. First operand 5043 states and 6540 transitions. Second operand 6 states. [2020-10-13 14:46:47,893 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification that was a NOOP. DAG size: 1381 [2020-10-13 14:47:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:47:20,366 INFO L93 Difference]: Finished difference Result 10212 states and 13244 transitions. [2020-10-13 14:47:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:47:20,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-13 14:47:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:47:20,396 INFO L225 Difference]: With dead ends: 10212 [2020-10-13 14:47:20,396 INFO L226 Difference]: Without dead ends: 6933 [2020-10-13 14:47:20,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:47:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6933 states. [2020-10-13 14:47:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6933 to 6903. [2020-10-13 14:47:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6903 states. [2020-10-13 14:47:20,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 8972 transitions. [2020-10-13 14:47:20,706 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 8972 transitions. Word has length 70 [2020-10-13 14:47:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:47:20,707 INFO L479 AbstractCegarLoop]: Abstraction has 6903 states and 8972 transitions. [2020-10-13 14:47:20,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:47:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 8972 transitions. [2020-10-13 14:47:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:47:20,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:47:20,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:47:20,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:47:20,722 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:47:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:47:20,722 INFO L82 PathProgramCache]: Analyzing trace with hash -701779496, now seen corresponding path program 1 times [2020-10-13 14:47:20,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:47:20,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348547841] [2020-10-13 14:47:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:47:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:47:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:21,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:47:25,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:47:25,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:47:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 14:47:25,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:47:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:47:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:47:25,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:47:25,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:33,407 WARN L193 SmtUtils]: Spent 7.27 s on a formula simplification that was a NOOP. DAG size: 1375 [2020-10-13 14:47:33,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:47:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:47:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:47:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:47:33,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:47:33,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:47:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 14:47:33,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:47:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:47:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:47:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:47:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:47:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:47:33,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348547841] [2020-10-13 14:47:33,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:47:33,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:47:33,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005218621] [2020-10-13 14:47:33,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:47:33,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:47:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:47:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:47:33,676 INFO L87 Difference]: Start difference. First operand 6903 states and 8972 transitions. Second operand 6 states. [2020-10-13 14:47:40,741 WARN L193 SmtUtils]: Spent 6.89 s on a formula simplification that was a NOOP. DAG size: 1384