/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:28:09,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:28:09,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:28:09,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:28:09,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:28:09,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:28:09,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:28:09,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:28:09,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:28:09,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:28:09,081 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:28:09,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:28:09,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:28:09,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:28:09,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:28:09,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:28:09,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:28:09,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:28:09,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:28:09,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:28:09,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:28:09,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:28:09,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:28:09,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:28:09,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:28:09,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:28:09,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:28:09,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:28:09,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:28:09,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:28:09,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:28:09,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:28:09,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:28:09,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:28:09,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:28:09,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:28:09,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:28:09,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:28:09,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:28:09,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:28:09,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:28:09,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 20:28:09,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:28:09,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:28:09,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:28:09,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:28:09,139 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:28:09,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:28:09,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:28:09,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:28:09,141 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:28:09,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:28:09,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:28:09,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:28:09,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:28:09,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:28:09,142 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:28:09,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:28:09,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:28:09,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:28:09,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:28:09,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:28:09,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:28:09,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:28:09,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:28:09,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:28:09,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:28:09,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:28:09,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:28:09,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:28:09,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:28:09,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:28:09,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:28:09,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e309ec3af/e6ab2e4fa7be4423893853e55467701d/FLAG6857c1ecd [2020-10-12 20:28:10,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:28:10,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:28:10,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e309ec3af/e6ab2e4fa7be4423893853e55467701d/FLAG6857c1ecd [2020-10-12 20:28:10,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e309ec3af/e6ab2e4fa7be4423893853e55467701d [2020-10-12 20:28:10,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:28:10,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:28:10,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:28:10,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:28:10,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:28:10,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:28:10" (1/1) ... [2020-10-12 20:28:10,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4ff61e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:10, skipping insertion in model container [2020-10-12 20:28:10,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:28:10" (1/1) ... [2020-10-12 20:28:10,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:28:10,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:28:11,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:28:11,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:28:11,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:28:11,684 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:28:11,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11 WrapperNode [2020-10-12 20:28:11,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:28:11,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:28:11,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:28:11,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:28:11,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... [2020-10-12 20:28:11,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:28:11,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:28:11,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:28:11,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:28:11,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:28:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:28:11,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:28:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:28:11,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:28:11,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:28:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:28:11,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:28:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:28:11,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:28:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:28:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:28:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:28:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:28:11,965 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:28:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:28:11,966 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:28:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 20:28:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:28:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:28:11,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:28:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:28:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:28:14,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:28:14,243 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:28:14,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:28:14 BoogieIcfgContainer [2020-10-12 20:28:14,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:28:14,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:28:14,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:28:14,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:28:14,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:28:10" (1/3) ... [2020-10-12 20:28:14,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301a2bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:28:14, skipping insertion in model container [2020-10-12 20:28:14,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:28:11" (2/3) ... [2020-10-12 20:28:14,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301a2bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:28:14, skipping insertion in model container [2020-10-12 20:28:14,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:28:14" (3/3) ... [2020-10-12 20:28:14,261 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-12 20:28:14,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:28:14,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:28:14,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:28:14,331 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:28:14,331 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:28:14,331 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:28:14,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:28:14,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:28:14,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:28:14,332 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:28:14,332 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:28:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-12 20:28:14,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-12 20:28:14,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:14,395 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] [2020-10-12 20:28:14,396 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:14,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:14,402 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-12 20:28:14,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:14,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718824032] [2020-10-12 20:28:14,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:17,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:18,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:20,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:20,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-12 20:28:20,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:28:20,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 20:28:20,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 20:28:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:28:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:28:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 20:28:21,323 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:28:21,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:21,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:21,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:21,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:21,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 20:28:21,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:21,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718824032] [2020-10-12 20:28:21,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:21,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:28:21,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086919291] [2020-10-12 20:28:21,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 20:28:21,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:21,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 20:28:21,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:28:21,510 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 8 states. [2020-10-12 20:28:22,504 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 392 [2020-10-12 20:28:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:29,695 INFO L93 Difference]: Finished difference Result 3005 states and 5196 transitions. [2020-10-12 20:28:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 20:28:29,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-12 20:28:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:29,746 INFO L225 Difference]: With dead ends: 3005 [2020-10-12 20:28:29,747 INFO L226 Difference]: Without dead ends: 2742 [2020-10-12 20:28:29,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 20:28:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-10-12 20:28:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 988. [2020-10-12 20:28:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-10-12 20:28:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1715 transitions. [2020-10-12 20:28:29,938 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1715 transitions. Word has length 217 [2020-10-12 20:28:29,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:29,944 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1715 transitions. [2020-10-12 20:28:29,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 20:28:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1715 transitions. [2020-10-12 20:28:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 20:28:29,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:29,961 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] [2020-10-12 20:28:29,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:28:29,961 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:29,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash 69609569, now seen corresponding path program 1 times [2020-10-12 20:28:29,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:29,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915959790] [2020-10-12 20:28:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:35,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:35,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 20:28:35,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:28:35,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 20:28:35,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:35,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:28:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-12 20:28:35,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 20:28:35,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 20:28:36,214 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:28:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:36,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:36,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:36,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:36,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:28:36,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:36,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:28:36,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:36,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915959790] [2020-10-12 20:28:36,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:36,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:28:36,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004759094] [2020-10-12 20:28:36,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:28:36,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:36,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:28:36,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:28:36,409 INFO L87 Difference]: Start difference. First operand 988 states and 1715 transitions. Second operand 9 states. [2020-10-12 20:28:37,342 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:28:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:28:45,643 INFO L93 Difference]: Finished difference Result 7150 states and 12173 transitions. [2020-10-12 20:28:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:28:45,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-10-12 20:28:45,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:28:45,685 INFO L225 Difference]: With dead ends: 7150 [2020-10-12 20:28:45,685 INFO L226 Difference]: Without dead ends: 6714 [2020-10-12 20:28:45,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:28:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2020-10-12 20:28:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 2205. [2020-10-12 20:28:45,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-10-12 20:28:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3782 transitions. [2020-10-12 20:28:45,884 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3782 transitions. Word has length 218 [2020-10-12 20:28:45,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:28:45,887 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 3782 transitions. [2020-10-12 20:28:45,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:28:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3782 transitions. [2020-10-12 20:28:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-12 20:28:45,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:28:45,894 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] [2020-10-12 20:28:45,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:28:45,895 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:28:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:28:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash 2091728673, now seen corresponding path program 1 times [2020-10-12 20:28:45,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:28:45,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498385368] [2020-10-12 20:28:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:28:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:46,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:51,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:51,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-12 20:28:51,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:28:51,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-12 20:28:51,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:28:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:28:51,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 20:28:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:28:52,261 WARN L193 SmtUtils]: Spent 985.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:28:52,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:28:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:28:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:28:52,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:28:52,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:28:52,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:28:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 20:28:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:28:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:28:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:28:52,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:28:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:28:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:28:52,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498385368] [2020-10-12 20:28:52,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:28:52,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:28:52,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804324735] [2020-10-12 20:28:52,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:28:52,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:28:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:28:52,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:28:52,489 INFO L87 Difference]: Start difference. First operand 2205 states and 3782 transitions. Second operand 9 states. [2020-10-12 20:28:53,429 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:29:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:01,252 INFO L93 Difference]: Finished difference Result 20353 states and 34554 transitions. [2020-10-12 20:29:01,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:29:01,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-10-12 20:29:01,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:01,339 INFO L225 Difference]: With dead ends: 20353 [2020-10-12 20:29:01,339 INFO L226 Difference]: Without dead ends: 18872 [2020-10-12 20:29:01,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:29:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2020-10-12 20:29:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 5829. [2020-10-12 20:29:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5829 states. [2020-10-12 20:29:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 9922 transitions. [2020-10-12 20:29:01,919 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 9922 transitions. Word has length 219 [2020-10-12 20:29:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:01,920 INFO L479 AbstractCegarLoop]: Abstraction has 5829 states and 9922 transitions. [2020-10-12 20:29:01,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:29:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 9922 transitions. [2020-10-12 20:29:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 20:29:01,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:01,926 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] [2020-10-12 20:29:01,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:29:01,927 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:01,929 INFO L82 PathProgramCache]: Analyzing trace with hash 357469480, now seen corresponding path program 1 times [2020-10-12 20:29:01,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:01,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832800196] [2020-10-12 20:29:01,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:02,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:04,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:07,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:07,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-12 20:29:07,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:29:07,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-12 20:29:07,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:29:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:29:07,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 20:29:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:29:08,039 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:29:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:08,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:08,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:08,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:08,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:08,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 20:29:08,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:08,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:08,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:08,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832800196] [2020-10-12 20:29:08,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:08,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:29:08,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882693092] [2020-10-12 20:29:08,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:29:08,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:29:08,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:29:08,164 INFO L87 Difference]: Start difference. First operand 5829 states and 9922 transitions. Second operand 9 states. [2020-10-12 20:29:08,941 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:29:18,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:18,471 INFO L93 Difference]: Finished difference Result 57990 states and 98240 transitions. [2020-10-12 20:29:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:29:18,472 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2020-10-12 20:29:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:18,607 INFO L225 Difference]: With dead ends: 57990 [2020-10-12 20:29:18,608 INFO L226 Difference]: Without dead ends: 53113 [2020-10-12 20:29:18,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:29:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53113 states. [2020-10-12 20:29:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53113 to 15983. [2020-10-12 20:29:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15983 states. [2020-10-12 20:29:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15983 states to 15983 states and 27098 transitions. [2020-10-12 20:29:20,817 INFO L78 Accepts]: Start accepts. Automaton has 15983 states and 27098 transitions. Word has length 220 [2020-10-12 20:29:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:20,817 INFO L479 AbstractCegarLoop]: Abstraction has 15983 states and 27098 transitions. [2020-10-12 20:29:20,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:29:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15983 states and 27098 transitions. [2020-10-12 20:29:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 20:29:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:20,824 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] [2020-10-12 20:29:20,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:29:20,824 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1860399928, now seen corresponding path program 1 times [2020-10-12 20:29:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:20,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052382878] [2020-10-12 20:29:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:20,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:21,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:21,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-12 20:29:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:29:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-12 20:29:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:29:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:29:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 20:29:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:26,751 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:29:26,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:26,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:26,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:26,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:26,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:29:26,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:26,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:26,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:26,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052382878] [2020-10-12 20:29:26,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:26,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:29:26,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561576736] [2020-10-12 20:29:26,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:29:26,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:26,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:29:26,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:29:26,837 INFO L87 Difference]: Start difference. First operand 15983 states and 27098 transitions. Second operand 9 states. [2020-10-12 20:29:27,639 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:29:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:29:43,998 INFO L93 Difference]: Finished difference Result 168036 states and 284208 transitions. [2020-10-12 20:29:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:29:43,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-10-12 20:29:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:29:44,372 INFO L225 Difference]: With dead ends: 168036 [2020-10-12 20:29:44,372 INFO L226 Difference]: Without dead ends: 153261 [2020-10-12 20:29:44,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:29:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153261 states. [2020-10-12 20:29:48,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153261 to 44228. [2020-10-12 20:29:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44228 states. [2020-10-12 20:29:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44228 states to 44228 states and 74816 transitions. [2020-10-12 20:29:48,854 INFO L78 Accepts]: Start accepts. Automaton has 44228 states and 74816 transitions. Word has length 221 [2020-10-12 20:29:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:29:48,854 INFO L479 AbstractCegarLoop]: Abstraction has 44228 states and 74816 transitions. [2020-10-12 20:29:48,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:29:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 44228 states and 74816 transitions. [2020-10-12 20:29:48,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-12 20:29:48,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:29:48,861 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] [2020-10-12 20:29:48,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:29:48,862 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:29:48,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:29:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1890316817, now seen corresponding path program 1 times [2020-10-12 20:29:48,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:29:48,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465770433] [2020-10-12 20:29:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:29:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:48,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:49,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:49,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:53,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:53,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-12 20:29:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 20:29:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:29:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:29:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-12 20:29:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 20:29:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:54,755 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:29:54,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:29:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:29:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:29:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:29:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:29:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:29:54,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465770433] [2020-10-12 20:29:54,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:29:54,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 20:29:54,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123324648] [2020-10-12 20:29:54,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:29:54,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:29:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:29:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:29:54,832 INFO L87 Difference]: Start difference. First operand 44228 states and 74816 transitions. Second operand 9 states. [2020-10-12 20:29:55,624 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:30:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:30:37,167 INFO L93 Difference]: Finished difference Result 490466 states and 828539 transitions. [2020-10-12 20:30:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 20:30:37,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-10-12 20:30:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:30:37,997 INFO L225 Difference]: With dead ends: 490466 [2020-10-12 20:30:37,998 INFO L226 Difference]: Without dead ends: 447598 [2020-10-12 20:30:38,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-12 20:30:38,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447598 states. [2020-10-12 20:30:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447598 to 123860. [2020-10-12 20:30:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123860 states. [2020-10-12 20:30:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123860 states to 123860 states and 209200 transitions. [2020-10-12 20:30:53,775 INFO L78 Accepts]: Start accepts. Automaton has 123860 states and 209200 transitions. Word has length 222 [2020-10-12 20:30:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:30:53,776 INFO L479 AbstractCegarLoop]: Abstraction has 123860 states and 209200 transitions. [2020-10-12 20:30:53,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:30:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 123860 states and 209200 transitions. [2020-10-12 20:30:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-12 20:30:53,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:30:53,782 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] [2020-10-12 20:30:53,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:30:53,782 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:30:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:30:53,783 INFO L82 PathProgramCache]: Analyzing trace with hash 2136680137, now seen corresponding path program 1 times [2020-10-12 20:30:53,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:30:53,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465965458] [2020-10-12 20:30:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:30:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:55,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:55,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:58,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:58,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-12 20:30:58,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:30:58,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:30:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:30:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-12 20:30:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 20:30:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:30:59,752 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-12 20:30:59,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:30:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:30:59,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:30:59,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:30:59,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:30:59,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:30:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:30:59,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:30:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:30:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:30:59,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:30:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:31:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:31:00,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465965458] [2020-10-12 20:31:00,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:31:00,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:31:00,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199684182] [2020-10-12 20:31:00,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:31:00,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:31:00,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:31:00,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:31:00,051 INFO L87 Difference]: Start difference. First operand 123860 states and 209200 transitions. Second operand 5 states. [2020-10-12 20:31:00,817 WARN L193 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-12 20:31:38,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:31:38,991 INFO L93 Difference]: Finished difference Result 479293 states and 808502 transitions. [2020-10-12 20:31:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:31:38,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-12 20:31:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:31:39,555 INFO L225 Difference]: With dead ends: 479293 [2020-10-12 20:31:39,555 INFO L226 Difference]: Without dead ends: 356415 [2020-10-12 20:31:39,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 20:31:39,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356415 states.