/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.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:33:28,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:33:28,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:33:29,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:33:29,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:33:29,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:33:29,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:33:29,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:33:29,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:33:29,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:33:29,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:33:29,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:33:29,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:33:29,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:33:29,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:33:29,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:33:29,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:33:29,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:33:29,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:33:29,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:33:29,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:33:29,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:33:29,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:33:29,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:33:29,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:33:29,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:33:29,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:33:29,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:33:29,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:33:29,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:33:29,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:33:29,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:33:29,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:33:29,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:33:29,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:33:29,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:33:29,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:33:29,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:33:29,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:33:29,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:33:29,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:33:29,082 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 03:33:29,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:33:29,117 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:33:29,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:33:29,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:33:29,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:33:29,120 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:33:29,120 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:33:29,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:33:29,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:33:29,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:33:29,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:33:29,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:33:29,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:33:29,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:33:29,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:33:29,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:33:29,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:33:29,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:33:29,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:33:29,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:33:29,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:33:29,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:33:29,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:33:29,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:33:29,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:33:29,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:33:29,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:33:29,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:33:29,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:33:29,125 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 03:33:29,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:33:29,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:33:29,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:33:29,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:33:29,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:33:29,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-15 03:33:29,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebf4e6595/dcae8f2912a648a48e83c2ea4005c9bb/FLAGfb8e55ec5 [2020-10-15 03:33:30,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:33:30,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-15 03:33:30,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebf4e6595/dcae8f2912a648a48e83c2ea4005c9bb/FLAGfb8e55ec5 [2020-10-15 03:33:30,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebf4e6595/dcae8f2912a648a48e83c2ea4005c9bb [2020-10-15 03:33:30,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:33:30,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:33:30,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:30,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:33:30,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:33:30,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:30" (1/1) ... [2020-10-15 03:33:30,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f9529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:30, skipping insertion in model container [2020-10-15 03:33:30,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:33:30" (1/1) ... [2020-10-15 03:33:30,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:33:31,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:33:34,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:34,679 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:33:37,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:33:37,059 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:33:37,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37 WrapperNode [2020-10-15 03:33:37,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:33:37,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:33:37,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:33:37,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:33:37,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (1/1) ... [2020-10-15 03:33:37,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:33:37,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:33:37,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:33:37,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:33:37,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (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 03:33:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:33:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:33:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:33:37,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:33:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:33:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:33:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:33:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:33:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:33:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:33:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:33:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:33:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:33:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:33:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:33:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:33:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:33:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:33:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:33:50,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:33:50,203 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:33:50,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:50 BoogieIcfgContainer [2020-10-15 03:33:50,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:33:50,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:33:50,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:33:50,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:33:50,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:33:30" (1/3) ... [2020-10-15 03:33:50,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e06cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:50, skipping insertion in model container [2020-10-15 03:33:50,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:33:37" (2/3) ... [2020-10-15 03:33:50,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e06cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:33:50, skipping insertion in model container [2020-10-15 03:33:50,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:33:50" (3/3) ... [2020-10-15 03:33:50,241 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2020-10-15 03:33:50,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:33:50,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-10-15 03:33:50,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-10-15 03:33:50,339 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:33:50,340 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:33:50,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:33:50,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:33:50,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:33:50,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:33:50,341 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:33:50,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:33:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states. [2020-10-15 03:33:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:33:50,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:33:50,478 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] [2020-10-15 03:33:50,478 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]=== [2020-10-15 03:33:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:33:50,485 INFO L82 PathProgramCache]: Analyzing trace with hash -902719385, now seen corresponding path program 1 times [2020-10-15 03:33:50,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:33:50,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183867443] [2020-10-15 03:33:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:33:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:33:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:53,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:33:56,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:33:56,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:33:56,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:33:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5152 [2020-10-15 03:33:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:33:56,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:33:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:33:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:33:56,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-15 03:33:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:34:13,223 WARN L193 SmtUtils]: Spent 15.83 s on a formula simplification that was a NOOP. DAG size: 2074 [2020-10-15 03:34:13,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:34:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:34:13,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:34:13,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:34:13,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:34:13,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:34:13,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-15 03:34:13,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:34:13,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:34:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:34:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:34:13,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:34:13,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:34:13,810 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 03:34:13,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183867443] [2020-10-15 03:34:13,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:34:13,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:34:13,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478963280] [2020-10-15 03:34:13,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:34:13,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:34:13,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:34:13,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:34:13,838 INFO L87 Difference]: Start difference. First operand 5472 states. Second operand 6 states. [2020-10-15 03:34:29,753 WARN L193 SmtUtils]: Spent 15.57 s on a formula simplification that was a NOOP. DAG size: 2083 [2020-10-15 03:36:35,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:35,840 INFO L93 Difference]: Finished difference Result 7849 states and 13296 transitions. [2020-10-15 03:36:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:35,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-15 03:36:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:35,890 INFO L225 Difference]: With dead ends: 7849 [2020-10-15 03:36:35,890 INFO L226 Difference]: Without dead ends: 5325 [2020-10-15 03:36:35,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:35,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5325 states. [2020-10-15 03:36:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5325 to 5214. [2020-10-15 03:36:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5214 states. [2020-10-15 03:36:36,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 6711 transitions. [2020-10-15 03:36:36,184 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 6711 transitions. Word has length 106 [2020-10-15 03:36:36,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:36,185 INFO L479 AbstractCegarLoop]: Abstraction has 5214 states and 6711 transitions. [2020-10-15 03:36:36,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:36,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 6711 transitions. [2020-10-15 03:36:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-15 03:36:36,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:36,201 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] [2020-10-15 03:36:36,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:36:36,202 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]=== [2020-10-15 03:36:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash -229464746, now seen corresponding path program 1 times [2020-10-15 03:36:36,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:36,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278789326] [2020-10-15 03:36:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:36,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:39,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:40,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-15 03:36:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 03:36:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-15 03:36:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:36:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:57,094 WARN L193 SmtUtils]: Spent 15.14 s on a formula simplification that was a NOOP. DAG size: 2074 [2020-10-15 03:36:57,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-15 03:36:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:57,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:57,683 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 03:36:57,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278789326] [2020-10-15 03:36:57,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:57,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:57,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417114808] [2020-10-15 03:36:57,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:57,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:57,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:57,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:57,687 INFO L87 Difference]: Start difference. First operand 5214 states and 6711 transitions. Second operand 6 states. [2020-10-15 03:37:13,630 WARN L193 SmtUtils]: Spent 15.52 s on a formula simplification that was a NOOP. DAG size: 2083