/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:31:11,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:31:11,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:31:11,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:31:11,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:31:11,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:31:11,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:31:11,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:31:11,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:31:11,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:31:11,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:31:11,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:31:11,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:31:11,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:31:11,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:31:11,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:31:11,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:31:11,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:31:11,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:31:11,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:31:11,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:31:11,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:31:11,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:31:11,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:31:11,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:31:11,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:31:11,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:31:11,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:31:11,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:31:11,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:31:11,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:31:11,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:31:11,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:31:11,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:31:11,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:31:11,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:31:11,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:31:11,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:31:11,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:31:11,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:31:11,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:31:11,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:31:11,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:31:11,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:31:11,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:31:11,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:31:11,797 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:31:11,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:31:11,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:31:11,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:31:11,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:31:11,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:31:11,799 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:31:11,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:31:11,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:31:11,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:31:11,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:31:11,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:31:11,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:31:11,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:31:11,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:31:11,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:31:11,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:31:11,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:31:11,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:31:11,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:31:11,802 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:31:12,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:31:12,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:31:12,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:31:12,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:31:12,128 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:31:12,129 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 20:31:12,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9b55885/98931b05ccda4d71ae0ad786178d1f68/FLAG4ff4ffd23 [2020-10-12 20:31:13,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:31:13,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 20:31:13,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9b55885/98931b05ccda4d71ae0ad786178d1f68/FLAG4ff4ffd23 [2020-10-12 20:31:13,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9b55885/98931b05ccda4d71ae0ad786178d1f68 [2020-10-12 20:31:13,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:31:13,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:31:13,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:31:13,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:31:13,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:31:13,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:31:13" (1/1) ... [2020-10-12 20:31:13,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d7c338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:13, skipping insertion in model container [2020-10-12 20:31:13,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:31:13" (1/1) ... [2020-10-12 20:31:13,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:31:14,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:31:18,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:31:18,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:31:21,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:31:22,012 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:31:22,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22 WrapperNode [2020-10-12 20:31:22,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:31:22,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:31:22,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:31:22,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:31:22,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... [2020-10-12 20:31:22,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:31:22,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:31:22,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:31:22,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:31:22,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:31:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:31:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:31:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:31:22,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:31:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:31:22,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:31:22,724 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:31:22,725 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:31:22,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:31:22,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:31:36,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:31:36,099 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:31:36,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:31:36 BoogieIcfgContainer [2020-10-12 20:31:36,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:31:36,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:31:36,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:31:36,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:31:36,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:31:13" (1/3) ... [2020-10-12 20:31:36,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb85e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:31:36, skipping insertion in model container [2020-10-12 20:31:36,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:31:22" (2/3) ... [2020-10-12 20:31:36,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcb85e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:31:36, skipping insertion in model container [2020-10-12 20:31:36,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:31:36" (3/3) ... [2020-10-12 20:31:36,131 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-12 20:31:36,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:31:36,152 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:31:36,167 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:31:36,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:31:36,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:31:36,213 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:31:36,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:31:36,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:31:36,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:31:36,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:31:36,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:31:36,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6869 states. [2020-10-12 20:31:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-12 20:31:36,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:31:36,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:31:36,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:31:36,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:31:36,368 INFO L82 PathProgramCache]: Analyzing trace with hash -303635533, now seen corresponding path program 1 times [2020-10-12 20:31:36,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:31:36,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793463504] [2020-10-12 20:31:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:31:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:38,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:39,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:40,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:42,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:42,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-12 20:31:42,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:31:42,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-12 20:31:42,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:31:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:31:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-12 20:31:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:31:44,127 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-12 20:31:44,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:31:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:31:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:31:44,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:31:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:31:44,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:31:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 20:31:44,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:31:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:31:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:31:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:31:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:31:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:31:44,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793463504] [2020-10-12 20:31:44,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:31:44,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:31:44,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504268729] [2020-10-12 20:31:44,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:31:44,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:31:44,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:31:44,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:31:44,777 INFO L87 Difference]: Start difference. First operand 6869 states. Second operand 5 states. [2020-10-12 20:32:45,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:32:45,269 INFO L93 Difference]: Finished difference Result 20283 states and 35503 transitions. [2020-10-12 20:32:45,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:32:45,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2020-10-12 20:32:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:32:45,374 INFO L225 Difference]: With dead ends: 20283 [2020-10-12 20:32:45,374 INFO L226 Difference]: Without dead ends: 13481 [2020-10-12 20:32:45,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:32:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2020-10-12 20:32:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 13479. [2020-10-12 20:32:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13479 states. [2020-10-12 20:32:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 22224 transitions. [2020-10-12 20:32:45,968 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 22224 transitions. Word has length 387 [2020-10-12 20:32:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:32:46,055 INFO L479 AbstractCegarLoop]: Abstraction has 13479 states and 22224 transitions. [2020-10-12 20:32:46,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:32:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 22224 transitions. [2020-10-12 20:32:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-12 20:32:46,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:32:46,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:32:46,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:32:46,093 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:32:46,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:32:46,094 INFO L82 PathProgramCache]: Analyzing trace with hash 172322132, now seen corresponding path program 1 times [2020-10-12 20:32:46,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:32:46,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067400868] [2020-10-12 20:32:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:32:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:47,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:48,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:49,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:50,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:51,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:51,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-12 20:32:51,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:32:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-12 20:32:51,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:32:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:32:51,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-12 20:32:51,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 20:32:53,283 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-12 20:32:53,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:32:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:32:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:32:53,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:32:53,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:32:53,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:32:53,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 20:32:53,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:32:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:32:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:32:53,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:32:53,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:32:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:32:53,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067400868] [2020-10-12 20:32:53,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:32:53,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:32:53,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565533610] [2020-10-12 20:32:53,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:32:53,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:32:53,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:32:53,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:32:53,816 INFO L87 Difference]: Start difference. First operand 13479 states and 22224 transitions. Second operand 5 states. [2020-10-12 20:33:51,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:33:51,120 INFO L93 Difference]: Finished difference Result 40246 states and 66339 transitions. [2020-10-12 20:33:51,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:33:51,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 387 [2020-10-12 20:33:51,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:33:51,222 INFO L225 Difference]: With dead ends: 40246 [2020-10-12 20:33:51,222 INFO L226 Difference]: Without dead ends: 26808 [2020-10-12 20:33:51,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:33:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26808 states. [2020-10-12 20:33:52,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26808 to 26806. [2020-10-12 20:33:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26806 states. [2020-10-12 20:33:52,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26806 states to 26806 states and 44115 transitions. [2020-10-12 20:33:52,242 INFO L78 Accepts]: Start accepts. Automaton has 26806 states and 44115 transitions. Word has length 387 [2020-10-12 20:33:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:33:52,244 INFO L479 AbstractCegarLoop]: Abstraction has 26806 states and 44115 transitions. [2020-10-12 20:33:52,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:33:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 26806 states and 44115 transitions. [2020-10-12 20:33:52,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-12 20:33:52,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:33:52,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:33:52,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:33:52,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:33:52,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:33:52,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1003551806, now seen corresponding path program 1 times [2020-10-12 20:33:52,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:33:52,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967768901] [2020-10-12 20:33:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:33:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:33:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:53,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:54,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:55,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:57,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:57,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 394 [2020-10-12 20:33:57,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:33:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-12 20:33:57,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:33:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:33:57,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-12 20:33:57,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:59,004 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 493 [2020-10-12 20:33:59,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:33:59,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:33:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:33:59,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:33:59,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:33:59,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:33:59,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 20:33:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:33:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:33:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:33:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:33:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:33:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:33:59,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967768901] [2020-10-12 20:33:59,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:33:59,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:33:59,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908215459] [2020-10-12 20:33:59,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:33:59,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:33:59,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:33:59,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:33:59,495 INFO L87 Difference]: Start difference. First operand 26806 states and 44115 transitions. Second operand 5 states.