/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=BIGGEST --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.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:46:53,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:46:53,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:46:53,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:46:53,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:46:53,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:46:53,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:46:53,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:46:53,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:46:53,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:46:53,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:46:53,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:46:53,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:46:53,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:46:53,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:46:53,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:46:53,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:46:53,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:46:53,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:46:53,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:46:53,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:46:53,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:46:53,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:46:53,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:46:53,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:46:53,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:46:53,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:46:53,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:46:53,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:46:53,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:46:53,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:46:53,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:46:53,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:46:53,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:46:53,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:46:53,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:46:53,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:46:53,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:46:53,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:46:53,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:46:53,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:46:53,699 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 [2020-10-12 19:46:53,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:46:53,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:46:53,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:46:53,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:46:53,755 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:46:53,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:46:53,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:46:53,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:46:53,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:46:53,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:46:53,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:46:53,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:46:53,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:46:53,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:46:53,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:46:53,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:46:53,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:46:53,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:46:53,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:46:53,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:46:53,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:46:53,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:46:53,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:46:53,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:46:53,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:46:53,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:46:53,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:46:53,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:46:53,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:46:53,762 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:46:54,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:46:54,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:46:54,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:46:54,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:46:54,091 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:46:54,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-12 19:46:54,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12df94c3/d483f74c5dcf4ca0a0be09f7bd09b083/FLAGffd1f0f7a [2020-10-12 19:46:55,256 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:46:55,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-12 19:46:55,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12df94c3/d483f74c5dcf4ca0a0be09f7bd09b083/FLAGffd1f0f7a [2020-10-12 19:46:55,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a12df94c3/d483f74c5dcf4ca0a0be09f7bd09b083 [2020-10-12 19:46:55,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:46:55,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:46:55,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:46:55,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:46:55,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:46:55,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:55" (1/1) ... [2020-10-12 19:46:55,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:46:55, skipping insertion in model container [2020-10-12 19:46:55,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:46:55" (1/1) ... [2020-10-12 19:46:55,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:46:56,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:46:59,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:46:59,666 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:47:01,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:47:01,914 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:47:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01 WrapperNode [2020-10-12 19:47:01,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:47:01,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:47:01,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:47:01,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:47:01,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:01,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (1/1) ... [2020-10-12 19:47:02,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:47:02,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:47:02,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:47:02,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:47:02,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (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 [2020-10-12 19:47:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:47:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:47:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:47:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:47:02,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:47:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:47:02,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:47:02,512 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:47:02,513 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:47:02,514 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:47:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:47:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:47:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:47:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-12 19:47:02,515 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:47:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:47:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:47:02,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:47:02,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:47:14,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:47:14,966 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:47:15,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:47:15 BoogieIcfgContainer [2020-10-12 19:47:15,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:47:15,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:47:15,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:47:15,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:47:15,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:46:55" (1/3) ... [2020-10-12 19:47:15,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f2f734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:47:15, skipping insertion in model container [2020-10-12 19:47:15,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:47:01" (2/3) ... [2020-10-12 19:47:15,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f2f734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:47:15, skipping insertion in model container [2020-10-12 19:47:15,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:47:15" (3/3) ... [2020-10-12 19:47:15,019 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-12 19:47:15,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:47:15,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-12 19:47:15,054 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-12 19:47:15,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:47:15,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:47:15,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:47:15,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:47:15,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:47:15,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:47:15,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:47:15,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:47:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states. [2020-10-12 19:47:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:47:15,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:47:15,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:47:15,244 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:47:15,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:47:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -902719385, now seen corresponding path program 1 times [2020-10-12 19:47:15,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:47:15,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434084250] [2020-10-12 19:47:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:47:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:16,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:18,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:21,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:21,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:47:21,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:47:21,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-12 19:47:21,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:47:21,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:47:21,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:47:21,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:47:37,543 WARN L193 SmtUtils]: Spent 15.53 s on a formula simplification that was a NOOP. DAG size: 2074 [2020-10-12 19:47:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:47:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:47:37,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:47:37,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:47:37,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:47:37,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:47:37,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 19:47:37,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:47:37,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:47:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:47:37,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:47:37,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:47:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:47:37,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434084250] [2020-10-12 19:47:37,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:47:37,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:47:37,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071283221] [2020-10-12 19:47:37,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:47:37,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:47:37,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:47:37,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:47:37,972 INFO L87 Difference]: Start difference. First operand 5472 states. Second operand 7 states. [2020-10-12 19:47:53,872 WARN L193 SmtUtils]: Spent 15.44 s on a formula simplification that was a NOOP. DAG size: 2078 [2020-10-12 19:50:34,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:50:34,033 INFO L93 Difference]: Finished difference Result 11145 states and 18493 transitions. [2020-10-12 19:50:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:50:34,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-12 19:50:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:50:34,108 INFO L225 Difference]: With dead ends: 11145 [2020-10-12 19:50:34,108 INFO L226 Difference]: Without dead ends: 9830 [2020-10-12 19:50:34,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:50:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9830 states. [2020-10-12 19:50:34,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9830 to 7301. [2020-10-12 19:50:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7301 states. [2020-10-12 19:50:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9538 transitions. [2020-10-12 19:50:34,537 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9538 transitions. Word has length 106 [2020-10-12 19:50:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:50:34,539 INFO L479 AbstractCegarLoop]: Abstraction has 7301 states and 9538 transitions. [2020-10-12 19:50:34,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:50:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9538 transitions. [2020-10-12 19:50:34,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 19:50:34,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:50:34,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:50:34,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:50:34,572 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:50:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:50:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash -229464746, now seen corresponding path program 1 times [2020-10-12 19:50:34,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:50:34,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557765350] [2020-10-12 19:50:34,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:50:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:34,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:39,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 19:50:39,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:50:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-12 19:50:39,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:50:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 19:50:39,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:50:39,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:55,499 WARN L193 SmtUtils]: Spent 15.20 s on a formula simplification that was a NOOP. DAG size: 2074 [2020-10-12 19:50:55,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:50:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:50:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:50:55,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:50:55,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:50:55,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:50:55,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 19:50:55,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:50:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:50:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:50:55,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:50:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:50:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:50:55,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557765350] [2020-10-12 19:50:55,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:50:55,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:50:55,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281989296] [2020-10-12 19:50:55,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:50:55,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:50:55,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:50:55,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:50:55,843 INFO L87 Difference]: Start difference. First operand 7301 states and 9538 transitions. Second operand 7 states.