/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_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:04:53,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:04:53,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:04:53,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:04:53,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:04:53,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:04:53,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:04:53,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:04:53,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:04:53,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:04:53,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:04:53,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:04:53,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:04:53,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:04:53,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:04:53,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:04:53,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:04:53,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:04:53,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:04:53,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:04:53,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:04:53,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:04:53,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:04:53,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:04:53,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:04:53,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:04:53,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:04:53,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:04:53,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:04:53,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:04:53,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:04:53,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:04:53,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:04:53,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:04:53,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:04:53,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:04:53,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:04:53,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:04:53,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:04:53,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:04:53,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:04:53,117 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 14:04:53,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:04:53,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:04:53,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:04:53,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:04:53,164 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:04:53,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:04:53,164 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:04:53,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:04:53,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:04:53,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:04:53,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:04:53,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:04:53,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:04:53,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:04:53,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:04:53,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:04:53,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:04:53,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:04:53,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:04:53,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:04:53,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:04:53,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:04:53,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:04:53,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:04:53,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:04:53,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:04:53,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:04:53,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:04:53,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:04:53,171 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 14:04:53,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:04:53,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:04:53,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:04:53,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:04:53,515 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:04:53,516 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:04:53,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/478a92dfc/05d9e7ae1d204f3594a2a501e20d8021/FLAG179ffeec4 [2020-10-13 14:04:54,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:04:54,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:04:54,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/478a92dfc/05d9e7ae1d204f3594a2a501e20d8021/FLAG179ffeec4 [2020-10-13 14:04:54,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/478a92dfc/05d9e7ae1d204f3594a2a501e20d8021 [2020-10-13 14:04:54,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:04:54,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:04:54,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:04:54,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:04:54,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:04:54,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:04:54" (1/1) ... [2020-10-13 14:04:54,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efc87c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:54, skipping insertion in model container [2020-10-13 14:04:54,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:04:54" (1/1) ... [2020-10-13 14:04:54,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:04:54,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:04:56,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:04:56,238 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:04:57,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:04:57,495 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:04:57,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57 WrapperNode [2020-10-13 14:04:57,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:04:57,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:04:57,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:04:57,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:04:57,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (1/1) ... [2020-10-13 14:04:57,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:04:57,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:04:57,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:04:57,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:04:57,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (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 14:04:57,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:04:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:04:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:04:57,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:04:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:04:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:04:57,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:04:57,842 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:04:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:04:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:04:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:04:57,843 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:04:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:04:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:04:57,844 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:04:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:04:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 14:04:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:04:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:04:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:04:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:04:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:05:01,861 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:05:01,861 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:05:01,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:05:01 BoogieIcfgContainer [2020-10-13 14:05:01,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:05:01,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:05:01,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:05:01,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:05:01,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:04:54" (1/3) ... [2020-10-13 14:05:01,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4c071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:05:01, skipping insertion in model container [2020-10-13 14:05:01,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:04:57" (2/3) ... [2020-10-13 14:05:01,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4c071d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:05:01, skipping insertion in model container [2020-10-13 14:05:01,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:05:01" (3/3) ... [2020-10-13 14:05:01,885 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-13 14:05:01,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:05:01,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:05:01,919 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:05:01,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:05:01,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:05:01,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:05:01,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:05:01,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:05:01,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:05:01,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:05:01,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:05:01,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states. [2020-10-13 14:05:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-10-13 14:05:02,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:02,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:02,032 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:02,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash -191467784, now seen corresponding path program 1 times [2020-10-13 14:05:02,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:02,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834453939] [2020-10-13 14:05:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:05,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:07,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:08,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:08,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 473 [2020-10-13 14:05:08,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:05:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5304 [2020-10-13 14:05:08,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:05:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-13 14:05:08,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:05:09,930 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:05:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:09,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:09,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:09,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:09,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:09,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 14:05:09,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:09,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:05:10,943 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 14:05:10,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834453939] [2020-10-13 14:05:10,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:10,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:10,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471026111] [2020-10-13 14:05:10,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:10,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:10,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:10,972 INFO L87 Difference]: Start difference. First operand 1322 states. Second operand 5 states. [2020-10-13 14:05:26,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:26,257 INFO L93 Difference]: Finished difference Result 3913 states and 7058 transitions. [2020-10-13 14:05:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:05:26,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2020-10-13 14:05:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:26,306 INFO L225 Difference]: With dead ends: 3913 [2020-10-13 14:05:26,307 INFO L226 Difference]: Without dead ends: 2600 [2020-10-13 14:05:26,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:05:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2020-10-13 14:05:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2020-10-13 14:05:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2598 states. [2020-10-13 14:05:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4269 transitions. [2020-10-13 14:05:26,525 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4269 transitions. Word has length 467 [2020-10-13 14:05:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:26,527 INFO L479 AbstractCegarLoop]: Abstraction has 2598 states and 4269 transitions. [2020-10-13 14:05:26,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:05:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4269 transitions. [2020-10-13 14:05:26,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-13 14:05:26,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:26,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:26,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:05:26,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:26,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1324326052, now seen corresponding path program 1 times [2020-10-13 14:05:26,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:26,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887887199] [2020-10-13 14:05:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:29,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:29,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:30,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:31,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-13 14:05:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:05:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5158 [2020-10-13 14:05:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:05:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 14:05:31,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-13 14:05:33,208 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:05:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:33,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:33,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:33,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:33,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:05:33,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:33,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:33,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:33,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:33,585 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 14:05:33,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887887199] [2020-10-13 14:05:33,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:33,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:33,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619147515] [2020-10-13 14:05:33,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:33,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:33,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:33,590 INFO L87 Difference]: Start difference. First operand 2598 states and 4269 transitions. Second operand 5 states. [2020-10-13 14:05:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:49,338 INFO L93 Difference]: Finished difference Result 7656 states and 12574 transitions. [2020-10-13 14:05:49,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:49,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-10-13 14:05:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:49,367 INFO L225 Difference]: With dead ends: 7656 [2020-10-13 14:05:49,367 INFO L226 Difference]: Without dead ends: 5140 [2020-10-13 14:05:49,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:05:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5140 states. [2020-10-13 14:05:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5140 to 5138. [2020-10-13 14:05:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5138 states. [2020-10-13 14:05:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 8415 transitions. [2020-10-13 14:05:49,632 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 8415 transitions. Word has length 469 [2020-10-13 14:05:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:49,634 INFO L479 AbstractCegarLoop]: Abstraction has 5138 states and 8415 transitions. [2020-10-13 14:05:49,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:05:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 8415 transitions. [2020-10-13 14:05:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-13 14:05:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:49,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:49,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:05:49,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:49,651 INFO L82 PathProgramCache]: Analyzing trace with hash -583483881, now seen corresponding path program 1 times [2020-10-13 14:05:49,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:49,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901870180] [2020-10-13 14:05:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:51,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:54,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:54,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 479 [2020-10-13 14:05:54,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:05:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:05:54,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:54,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:05:54,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:05:54,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 14:05:54,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:05:56,140 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:05:56,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:56,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:56,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 14:05:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:05:56,779 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 14:05:56,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901870180] [2020-10-13 14:05:56,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:56,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:05:56,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320099751] [2020-10-13 14:05:56,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:05:56,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:56,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:05:56,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:56,785 INFO L87 Difference]: Start difference. First operand 5138 states and 8415 transitions. Second operand 5 states. [2020-10-13 14:06:10,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:10,635 INFO L93 Difference]: Finished difference Result 15254 states and 24977 transitions. [2020-10-13 14:06:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:10,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 473 [2020-10-13 14:06:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:10,679 INFO L225 Difference]: With dead ends: 15254 [2020-10-13 14:06:10,680 INFO L226 Difference]: Without dead ends: 10152 [2020-10-13 14:06:10,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:06:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2020-10-13 14:06:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10150. [2020-10-13 14:06:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10150 states. [2020-10-13 14:06:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10150 states to 10150 states and 16543 transitions. [2020-10-13 14:06:11,230 INFO L78 Accepts]: Start accepts. Automaton has 10150 states and 16543 transitions. Word has length 473 [2020-10-13 14:06:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:11,232 INFO L479 AbstractCegarLoop]: Abstraction has 10150 states and 16543 transitions. [2020-10-13 14:06:11,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:06:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 10150 states and 16543 transitions. [2020-10-13 14:06:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-10-13 14:06:11,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:11,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:11,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:06:11,255 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:11,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:11,255 INFO L82 PathProgramCache]: Analyzing trace with hash 2121897391, now seen corresponding path program 1 times [2020-10-13 14:06:11,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:11,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428893728] [2020-10-13 14:06:11,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:13,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:13,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:16,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:16,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-13 14:06:16,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:06:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 14:06:16,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:06:16,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 14:06:16,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:17,207 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:06:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:17,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:17,464 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 14:06:17,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428893728] [2020-10-13 14:06:17,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:17,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:17,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652353667] [2020-10-13 14:06:17,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:17,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:17,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:17,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:17,466 INFO L87 Difference]: Start difference. First operand 10150 states and 16543 transitions. Second operand 4 states. [2020-10-13 14:06:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:35,484 INFO L93 Difference]: Finished difference Result 30318 states and 49397 transitions. [2020-10-13 14:06:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:06:35,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 476 [2020-10-13 14:06:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:35,547 INFO L225 Difference]: With dead ends: 30318 [2020-10-13 14:06:35,547 INFO L226 Difference]: Without dead ends: 20228 [2020-10-13 14:06:35,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:35,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20228 states. [2020-10-13 14:06:36,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20228 to 10234. [2020-10-13 14:06:36,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10234 states. [2020-10-13 14:06:36,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10234 states to 10234 states and 16661 transitions. [2020-10-13 14:06:36,144 INFO L78 Accepts]: Start accepts. Automaton has 10234 states and 16661 transitions. Word has length 476 [2020-10-13 14:06:36,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:36,144 INFO L479 AbstractCegarLoop]: Abstraction has 10234 states and 16661 transitions. [2020-10-13 14:06:36,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:06:36,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10234 states and 16661 transitions. [2020-10-13 14:06:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-13 14:06:36,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:36,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:36,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:06:36,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash -854781687, now seen corresponding path program 1 times [2020-10-13 14:06:36,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:36,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344944165] [2020-10-13 14:06:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:36,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:36,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:40,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:41,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:41,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:41,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-13 14:06:41,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:06:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:06:41,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:06:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 14:06:41,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:06:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:42,220 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:06:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:42,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:06:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:42,512 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 14:06:42,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344944165] [2020-10-13 14:06:42,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:42,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:06:42,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476637154] [2020-10-13 14:06:42,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:06:42,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:06:42,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:42,515 INFO L87 Difference]: Start difference. First operand 10234 states and 16661 transitions. Second operand 5 states. [2020-10-13 14:07:01,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:01,203 INFO L93 Difference]: Finished difference Result 29168 states and 47267 transitions. [2020-10-13 14:07:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:01,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2020-10-13 14:07:01,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:01,245 INFO L225 Difference]: With dead ends: 29168 [2020-10-13 14:07:01,245 INFO L226 Difference]: Without dead ends: 20238 [2020-10-13 14:07:01,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:07:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20238 states. [2020-10-13 14:07:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20238 to 11524. [2020-10-13 14:07:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11524 states. [2020-10-13 14:07:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11524 states to 11524 states and 19001 transitions. [2020-10-13 14:07:01,910 INFO L78 Accepts]: Start accepts. Automaton has 11524 states and 19001 transitions. Word has length 479 [2020-10-13 14:07:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:01,911 INFO L479 AbstractCegarLoop]: Abstraction has 11524 states and 19001 transitions. [2020-10-13 14:07:01,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11524 states and 19001 transitions. [2020-10-13 14:07:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-10-13 14:07:01,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:01,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:01,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:07:01,933 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash -568136698, now seen corresponding path program 1 times [2020-10-13 14:07:01,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:01,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350045385] [2020-10-13 14:07:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:02,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:05,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:07,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:07,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:07:07,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-13 14:07:07,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:07,933 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:07:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:07,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:07,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:07,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:08,195 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 14:07:08,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350045385] [2020-10-13 14:07:08,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:08,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:08,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238391315] [2020-10-13 14:07:08,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:08,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:08,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:08,198 INFO L87 Difference]: Start difference. First operand 11524 states and 19001 transitions. Second operand 5 states. [2020-10-13 14:07:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:23,474 INFO L93 Difference]: Finished difference Result 33787 states and 55674 transitions. [2020-10-13 14:07:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:23,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 479 [2020-10-13 14:07:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:23,511 INFO L225 Difference]: With dead ends: 33787 [2020-10-13 14:07:23,511 INFO L226 Difference]: Without dead ends: 22427 [2020-10-13 14:07:23,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:07:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2020-10-13 14:07:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 22425. [2020-10-13 14:07:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22425 states. [2020-10-13 14:07:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22425 states to 22425 states and 36758 transitions. [2020-10-13 14:07:24,553 INFO L78 Accepts]: Start accepts. Automaton has 22425 states and 36758 transitions. Word has length 479 [2020-10-13 14:07:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:24,553 INFO L479 AbstractCegarLoop]: Abstraction has 22425 states and 36758 transitions. [2020-10-13 14:07:24,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22425 states and 36758 transitions. [2020-10-13 14:07:24,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-13 14:07:24,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:24,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:24,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:07:24,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:24,587 INFO L82 PathProgramCache]: Analyzing trace with hash -617618134, now seen corresponding path program 1 times [2020-10-13 14:07:24,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:24,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534211406] [2020-10-13 14:07:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:25,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:26,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:29,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:29,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-13 14:07:29,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:07:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:07:29,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:29,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 14:07:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:07:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:07:30,726 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:07:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:30,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:30,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:30,918 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 14:07:30,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534211406] [2020-10-13 14:07:30,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:30,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:30,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586988248] [2020-10-13 14:07:30,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:30,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:30,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:30,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:30,921 INFO L87 Difference]: Start difference. First operand 22425 states and 36758 transitions. Second operand 5 states. [2020-10-13 14:07:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:07:48,390 INFO L93 Difference]: Finished difference Result 60661 states and 98602 transitions. [2020-10-13 14:07:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:07:48,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 481 [2020-10-13 14:07:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:07:48,447 INFO L225 Difference]: With dead ends: 60661 [2020-10-13 14:07:48,447 INFO L226 Difference]: Without dead ends: 42677 [2020-10-13 14:07:48,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:07:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42677 states. [2020-10-13 14:07:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42677 to 26291. [2020-10-13 14:07:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26291 states. [2020-10-13 14:07:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26291 states to 26291 states and 43647 transitions. [2020-10-13 14:07:51,307 INFO L78 Accepts]: Start accepts. Automaton has 26291 states and 43647 transitions. Word has length 481 [2020-10-13 14:07:51,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:07:51,307 INFO L479 AbstractCegarLoop]: Abstraction has 26291 states and 43647 transitions. [2020-10-13 14:07:51,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:07:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 26291 states and 43647 transitions. [2020-10-13 14:07:51,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-13 14:07:51,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:07:51,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:07:51,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:07:51,335 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:07:51,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:07:51,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1395136874, now seen corresponding path program 1 times [2020-10-13 14:07:51,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:07:51,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197147145] [2020-10-13 14:07:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:07:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:54,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:56,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:56,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-13 14:07:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:07:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 14:07:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:07:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:07:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:07:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:57,384 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:07:57,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:07:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:07:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:07:57,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:07:57,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:07:57,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:07:57,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:07:57,565 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 14:07:57,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197147145] [2020-10-13 14:07:57,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:07:57,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:07:57,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941387366] [2020-10-13 14:07:57,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:07:57,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:07:57,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:07:57,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:07:57,568 INFO L87 Difference]: Start difference. First operand 26291 states and 43647 transitions. Second operand 5 states. [2020-10-13 14:08:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:08:18,595 INFO L93 Difference]: Finished difference Result 69175 states and 113602 transitions. [2020-10-13 14:08:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:08:18,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2020-10-13 14:08:18,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:08:18,658 INFO L225 Difference]: With dead ends: 69175 [2020-10-13 14:08:18,658 INFO L226 Difference]: Without dead ends: 50511 [2020-10-13 14:08:18,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:08:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50511 states. [2020-10-13 14:08:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50511 to 34240. [2020-10-13 14:08:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34240 states. [2020-10-13 14:08:20,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34240 states to 34240 states and 57696 transitions. [2020-10-13 14:08:20,696 INFO L78 Accepts]: Start accepts. Automaton has 34240 states and 57696 transitions. Word has length 483 [2020-10-13 14:08:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:08:20,697 INFO L479 AbstractCegarLoop]: Abstraction has 34240 states and 57696 transitions. [2020-10-13 14:08:20,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:08:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 34240 states and 57696 transitions. [2020-10-13 14:08:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-13 14:08:20,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:08:20,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:08:20,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:08:20,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:08:20,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:08:20,735 INFO L82 PathProgramCache]: Analyzing trace with hash 423593670, now seen corresponding path program 1 times [2020-10-13 14:08:20,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:08:20,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259662435] [2020-10-13 14:08:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:08:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:22,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:22,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:23,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:23,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:23,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:24,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:25,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:25,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-13 14:08:25,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:08:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:08:25,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:08:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 14:08:25,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 14:08:25,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:26,676 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-13 14:08:26,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:08:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:08:26,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:08:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:08:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:08:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:08:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:08:26,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:08:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:08:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:08:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:08:26,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:08:27,178 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 14:08:27,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259662435] [2020-10-13 14:08:27,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:08:27,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:08:27,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964924077] [2020-10-13 14:08:27,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:08:27,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:08:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:08:27,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:08:27,181 INFO L87 Difference]: Start difference. First operand 34240 states and 57696 transitions. Second operand 4 states.