/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.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:31:39,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:31:39,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:31:39,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:31:39,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:31:39,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:31:39,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:31:39,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:31:39,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:31:39,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:31:39,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:31:39,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:31:39,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:31:39,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:31:39,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:31:39,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:31:39,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:31:39,705 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:31:39,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:31:39,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:31:39,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:31:39,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:31:39,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:31:39,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:31:39,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:31:39,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:31:39,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:31:39,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:31:39,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:31:39,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:31:39,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:31:39,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:31:39,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:31:39,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:31:39,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:31:39,722 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:31:39,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:31:39,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:31:39,723 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:31:39,724 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:31:39,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:31:39,725 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 14:31:39,747 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:31:39,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:31:39,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:31:39,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:31:39,749 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:31:39,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:31:39,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:31:39,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:31:39,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:31:39,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:31:39,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:31:39,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:31:39,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:31:39,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:31:39,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:31:39,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:31:39,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:31:39,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:31:39,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:31:39,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:31:39,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:31:39,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:31:39,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:31:39,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:31:39,754 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 14:31:40,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:31:40,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:31:40,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:31:40,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:31:40,081 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:31:40,082 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:31:40,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45e16d17/76f73a12cd2545b8af7e0602cc11f869/FLAG67ac7654e [2020-10-13 14:31:41,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:31:41,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:31:41,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45e16d17/76f73a12cd2545b8af7e0602cc11f869/FLAG67ac7654e [2020-10-13 14:31:41,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b45e16d17/76f73a12cd2545b8af7e0602cc11f869 [2020-10-13 14:31:41,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:31:41,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:31:41,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:31:41,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:31:41,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:31:41,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:31:41" (1/1) ... [2020-10-13 14:31:41,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b03bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:41, skipping insertion in model container [2020-10-13 14:31:41,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:31:41" (1/1) ... [2020-10-13 14:31:41,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:31:41,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:31:45,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:31:45,933 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:31:49,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:31:49,204 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:31:49,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49 WrapperNode [2020-10-13 14:31:49,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:31:49,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:31:49,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:31:49,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:31:49,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (1/1) ... [2020-10-13 14:31:49,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:31:49,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:31:49,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:31:49,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:31:49,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (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 14:31:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:31:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:31:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:31:49,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:31:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:31:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:31:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:31:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:31:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:31:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:31:49,744 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:31:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:31:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:31:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:31:49,745 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:31:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:31:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:31:49,746 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:31:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-13 14:31:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-13 14:31:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-13 14:31:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:31:49,747 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:31:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:31:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:31:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:32:00,122 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:32:00,123 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:32:00,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:00 BoogieIcfgContainer [2020-10-13 14:32:00,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:32:00,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:32:00,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:32:00,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:32:00,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:31:41" (1/3) ... [2020-10-13 14:32:00,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da540af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:00, skipping insertion in model container [2020-10-13 14:32:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:31:49" (2/3) ... [2020-10-13 14:32:00,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da540af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:32:00, skipping insertion in model container [2020-10-13 14:32:00,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:32:00" (3/3) ... [2020-10-13 14:32:00,150 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 14:32:00,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:32:00,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2020-10-13 14:32:00,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2020-10-13 14:32:00,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:32:00,224 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:32:00,224 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:32:00,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:32:00,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:32:00,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:32:00,225 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:32:00,225 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:32:00,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3859 states. [2020-10-13 14:32:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 14:32:00,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:32:00,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:32:00,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:32:00,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:32:00,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1922900108, now seen corresponding path program 1 times [2020-10-13 14:32:00,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:32:00,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504350867] [2020-10-13 14:32:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:32:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:06,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:06,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 14:32:06,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:32:06,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 14:32:06,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:32:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:32:06,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 14:32:06,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:32:12,475 WARN L193 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-13 14:32:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:32:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:32:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:32:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:32:12,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:32:12,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:32:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 14:32:12,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:32:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:32:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:32:12,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:32:12,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:32:12,835 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 14:32:12,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504350867] [2020-10-13 14:32:12,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:32:12,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:32:12,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711916094] [2020-10-13 14:32:12,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:32:12,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:32:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:32:12,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:32:12,872 INFO L87 Difference]: Start difference. First operand 3859 states. Second operand 7 states. [2020-10-13 14:32:19,241 WARN L193 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 1241 [2020-10-13 14:33:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:33:21,991 INFO L93 Difference]: Finished difference Result 10521 states and 18253 transitions. [2020-10-13 14:33:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:33:22,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-13 14:33:22,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:33:22,062 INFO L225 Difference]: With dead ends: 10521 [2020-10-13 14:33:22,062 INFO L226 Difference]: Without dead ends: 8263 [2020-10-13 14:33:22,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:33:22,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2020-10-13 14:33:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 6150. [2020-10-13 14:33:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6150 states. [2020-10-13 14:33:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6150 states to 6150 states and 8526 transitions. [2020-10-13 14:33:22,436 INFO L78 Accepts]: Start accepts. Automaton has 6150 states and 8526 transitions. Word has length 120 [2020-10-13 14:33:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:33:22,438 INFO L479 AbstractCegarLoop]: Abstraction has 6150 states and 8526 transitions. [2020-10-13 14:33:22,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:33:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6150 states and 8526 transitions. [2020-10-13 14:33:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-13 14:33:22,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:33:22,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:33:22,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:33:22,462 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:33:22,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:33:22,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1632668483, now seen corresponding path program 1 times [2020-10-13 14:33:22,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:33:22,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85481569] [2020-10-13 14:33:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:33:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:22,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:26,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:27,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:27,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-13 14:33:27,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:33:27,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 14:33:27,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:27,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:33:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:33:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 14:33:27,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 14:33:33,771 WARN L193 SmtUtils]: Spent 5.72 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-13 14:33:33,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:33:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:33:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:33:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:33:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:33:33,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:33:33,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 14:33:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:33:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:33:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:33:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:33:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:33:33,961 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 14:33:33,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85481569] [2020-10-13 14:33:33,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:33:33,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:33:33,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967393674] [2020-10-13 14:33:33,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:33:33,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:33:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:33:33,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:33:33,965 INFO L87 Difference]: Start difference. First operand 6150 states and 8526 transitions. Second operand 7 states. [2020-10-13 14:33:39,977 WARN L193 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 1241 [2020-10-13 14:34:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:34:22,021 INFO L93 Difference]: Finished difference Result 23669 states and 34480 transitions. [2020-10-13 14:34:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:34:22,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-13 14:34:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:34:22,113 INFO L225 Difference]: With dead ends: 23669 [2020-10-13 14:34:22,114 INFO L226 Difference]: Without dead ends: 18760 [2020-10-13 14:34:22,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:34:22,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18760 states. [2020-10-13 14:34:22,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18760 to 13572. [2020-10-13 14:34:22,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13572 states. [2020-10-13 14:34:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13572 states to 13572 states and 19837 transitions. [2020-10-13 14:34:22,720 INFO L78 Accepts]: Start accepts. Automaton has 13572 states and 19837 transitions. Word has length 121 [2020-10-13 14:34:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:34:22,721 INFO L479 AbstractCegarLoop]: Abstraction has 13572 states and 19837 transitions. [2020-10-13 14:34:22,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:34:22,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13572 states and 19837 transitions. [2020-10-13 14:34:22,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 14:34:22,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:34:22,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:34:22,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:34:22,755 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:34:22,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:34:22,756 INFO L82 PathProgramCache]: Analyzing trace with hash 587200034, now seen corresponding path program 1 times [2020-10-13 14:34:22,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:34:22,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091173941] [2020-10-13 14:34:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:34:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:24,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:25,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:27,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:27,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 14:34:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:34:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 14:34:27,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:34:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:34:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 14:34:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:34:34,476 WARN L193 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 1237 [2020-10-13 14:34:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:34:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:34:34,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:34:34,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:34:34,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:34:34,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:34:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 14:34:34,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:34:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:34:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:34:34,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:34:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:34:34,659 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 14:34:34,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091173941] [2020-10-13 14:34:34,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:34:34,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:34:34,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570351025] [2020-10-13 14:34:34,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:34:34,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:34:34,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:34:34,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:34:34,665 INFO L87 Difference]: Start difference. First operand 13572 states and 19837 transitions. Second operand 7 states. [2020-10-13 14:34:40,717 WARN L193 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 1241 [2020-10-13 14:35:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:35:20,020 INFO L93 Difference]: Finished difference Result 43926 states and 65181 transitions. [2020-10-13 14:35:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:35:20,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-13 14:35:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:35:20,117 INFO L225 Difference]: With dead ends: 43926 [2020-10-13 14:35:20,117 INFO L226 Difference]: Without dead ends: 36833 [2020-10-13 14:35:20,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:35:20,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36833 states. [2020-10-13 14:35:20,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36833 to 23082. [2020-10-13 14:35:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23082 states. [2020-10-13 14:35:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23082 states to 23082 states and 34207 transitions. [2020-10-13 14:35:21,009 INFO L78 Accepts]: Start accepts. Automaton has 23082 states and 34207 transitions. Word has length 122 [2020-10-13 14:35:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:35:21,015 INFO L479 AbstractCegarLoop]: Abstraction has 23082 states and 34207 transitions. [2020-10-13 14:35:21,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:35:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 23082 states and 34207 transitions. [2020-10-13 14:35:21,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 14:35:21,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:35:21,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:35:21,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:35:21,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr30ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr35ASSERT_VIOLATIONERROR_FUNCTION, mainErr28ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr32ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr26ASSERT_VIOLATIONERROR_FUNCTION, mainErr33ASSERT_VIOLATIONERROR_FUNCTION, mainErr18ASSERT_VIOLATIONERROR_FUNCTION, mainErr24ASSERT_VIOLATIONERROR_FUNCTION, mainErr20ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr22ASSERT_VIOLATIONERROR_FUNCTION, mainErr29ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr36ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr31ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr19ASSERT_VIOLATIONERROR_FUNCTION, mainErr34ASSERT_VIOLATIONERROR_FUNCTION, mainErr25ASSERT_VIOLATIONERROR_FUNCTION, mainErr17ASSERT_VIOLATIONERROR_FUNCTION, mainErr27ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr21ASSERT_VIOLATIONERROR_FUNCTION, mainErr23ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:35:21,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:35:21,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2102708490, now seen corresponding path program 1 times [2020-10-13 14:35:21,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:35:21,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482413886] [2020-10-13 14:35:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:35:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:35:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:24,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:35:26,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:35:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 14:35:26,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:35:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 14:35:26,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:35:26,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:35:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:35:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 14:35:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0